The first birds appeared during which time?
Mesozoic era
Devonian period
Paleocene epoch
Cenozoic era

Answers

Answer 1

Answer:

The answer is  the Mesozoic era

Answer 2
The Mesozoic era specifically the Cretaceous period

Related Questions

4. Light energy is converted into chemical energy (glucose) through the process of (LT-12)
A. cellular respiration B. fermentation C. glycolysis D. photosynthesis

Answers

Answer:

the process is photosynthesis

Help please!!! Will mark brainliest:)

Answers

identifying for components for 1 trial of this investigation is 185

Which of the following best describes the difference between science and technology?
A.
Scientific principles must be supported by evidence and data, while technological principles do not require evidence and data.

B.
Technological principles must be supported by evidence and data, while scientific principles do not require evidence and data.

C.
The goal of technology is to gain knowledge about the natural world, while the goal of science is to create new processes or products for human use.

D.
The goal of science is to gain knowledge about the natural world, while the goal of technology is to create new processes or products for human use.

Answers

Answer:

A

Explanation:

Yes

Which of the following can be found in all types of cells?
-Nucleus
-DNA and RNA
-Mitochondria
-Unicorns

Answers

Answer:

Explanation:

All cells have  CTYTOPLASM AND DNA.Hope this helps

What is a job of the skatetal system? Remove wast. Protect organs. Exchange oxygen and carbon dioxide. Deliver nutrients to the body

Answers

Answer:

The correct answer is - Protect organs

Explanation:

The skeletal system is the internal frame of the body that includes all the bones and joints present in the body. There are 206 bones in the adult human skeletal system.

The major roles of the skeletal system to help in movement, support, and protecting vital organs such as hearts, stomach, lungs, brain, and other organs. It also helps in movement and providing support to the body.

*WILL MARK BRAINIST*
Which body system is not directly connected to itself?

O respiratory
O circulatory
O endocrine

Answers

Okie gosh gosh oh yeah lol yeah yeah oh

Giraffes have changed over time to have long necks so that they can reach leaves on tall trees and drink water from a low pool even though their legs don’t bend. What big idea of biology does this situation illustrate?

Answers

Answer:

this illustrates that giraffes have adapted over time to their surroundings and needs.

Explanation:

i dont know if this is correct but it seemed like the obvious answer to me if i need to elaborate tell me

The big idea of biology this incident show is adaptation as the giraffes adopted the habit according to the situation which continues since long time.

What is adaptation?

Adaptation is defined as a change in habit or body structure of an organism according to situation to get fit for survival in changing environment.

Adaptation is very important factor for survival of organisms and there are several types of adaptation such as behavioral, physiological, and structural adaptation.

Charles Darwin proposed the theory of adaptation which states that "an organism that is able to adapt to changing environment will survive, the rest will be eliminated.

Therefore,The big idea of biology this incident show is adaptation as the giraffes adopted the habit according to the situation which continues since long time.

Learn more about adaptation here:

https://brainly.com/question/12534888

#SPJ2

what is the role of amino acids in protein synthesis

Answers

✧・゚: *✧・゚:*    *:・゚✧*:・゚✧Answer:✧・゚: *✧・゚:*    *:・゚✧*:・゚✧

Amino acids, long considered simply substrates for protein synthesis, have been recently shown to act as modulators of intracellular signal transduction pathways typically associated with growth-promoting hormones such as insulin and insulin-like growth factor-1.

Explanation:

The correct tRNA with the anticodon (complementary 3 nucleotide sequence UAC) binds to the mRNA using the ribosome. This tRNA delivers the correct amino acid corresponding to the mRNA codon, in the case of the start codon, this is the amino acid methionine.

They have been shown to act as modulators of intracellular signal transduction pathways typically associated with growth-promoting hormones such as insulin and insulin-like growth factor-1.

Particles have _____ energy as well as kinetic energy. (one word answer-lower case)

Answers

Answer:

potential energy

mark me brainliest

what is called as photosynthesis

Answers

Explanation:

Any process by which plants and other photoautotrophs convert light energy into chemical energy is photosynthesis.

Hope it will help :)❤

Answer:

Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.

Identify the orbital being described by the given quantum numbers.

1. n=3, l=0
_________

2. n=4, l=2
_________

3. n=4, l=3
_________

4. n=2, l=1
_________

Answers

Answer:

1.3

2.6

3.7

4.3ksmxndndffmfmfmmfjfifof

That question got me thrown off

Answers

Answer:

Dominant

Explanation:

If both of the parents don't express the trait and the child does, then the pedigree is recessive.  According to Mendel's law, the recessive trait will only show if there are two recessive alleles.  If both of the parents of have the trait and their child does, that means that the parents are heterozygous.

If one of the parents have the trait and the child does or doesn't, then the pedigree is dominant.

What components do all cells have?

Answers

Answer:

Both animal and plant cells have these components: Cell membrane – this surrounds the cell and allows nutrients to enter and waste to leave it. Nucleus – this controls what happens in the cell. It contains DNA, the genetic information that cells need to grow and reproduce.

All cells share four common components: (1) a plasma membrane, an outer covering that separates the cell’s interior from its surrounding environment; (2) cytoplasm, consisting of a jelly-like region within the cell in which other cellular components are found; (3) DNA, the genetic material of the cell; and (4) ribosomes, particles that synthesize proteins.

Identity and describe two sources of energy that generally have limited environmental impacts

Answers

solar, wind and hydroelectric. Many Many of these energy sources have little to no harmful emissions, and generally contribute little to global greenhouse gases.

Which statement describes something qualitative?
The apple is red.
The apple has a mass of 30 g.
The apple has a circumference of 20 cm.

Answers

Answer:

The apple is red.

Explanation:

Qualitative information is a form of information about a particular thing or place that can be seen or observed by not be measured in terms of figures. This is unlike quantitative information that measures the lengths, heights, thickness, etc of an item.

Hence, in this case, the correct answer is "The apple is red."

The other options describe quantitative information of the object under study. "Apple."

Which is an organic compound.
a. NaCl
b. H20
C. C6H1206
d. 02

Answers

i think c is an organic compound but i can be wrong

Answer:

D.) O2

If I am wrong you can report me saying that the answer was incorrect or absurd.

How might exposure to a harmful chemical cause a mutation at the molecular level?

Answers

I can’t quite answer this but I know it damages the way cells repair DNA and causes cancer

I hope this helps

PLEASE HELP! WILL GIVE BRAINLIEST!
Why does the color of light affect the rate of photosynthesis?

Answers

Chlorophyll is green, so it naturally reflects green light. This makes blue and red light better for growing plans than green light does.

Answer:

Explanation:

Red, purple, and clear light would have a high rate of photosynthesis, while yellow and green light would have a low rate of photosynthesis. White light would fastest because it absorbs all colors of the spectrum, not just one.

Plz mark me brainliest.

Liquid is the state of matter of a substance...

A.. that has a definite shape and volume

B.. that has neither a d finite shape nor a definite volume

C.. that has a definite shape and weight

D.. that has a definite volume, bust not definite shape


I need a answe ASAP the subject is science btw

Answers

Answer:

D. that has a definite volume, but no definite shape

Explanation:

There are mainly three states of matter and these are: solid, liquid and gas.

Liquid has a definite volume because its particles still remain in contact although they're moving freely. On the other hand, such free movement of the particles render it to have "no definite shape." This is the reason why liquid takes the shape of the container it is poured into.

If you pour a 500-ml liquid into a rectangular-shaped container, it will look rectangular. However, its volume of 500-ml will remain the same.

Explain three ways classification is helpful.

Answers

- It helps in the identification of living organisms as well as in understanding the diversity of living organisms.  

- To understand and study the features, similarities and differences between different living organisms and how they are grouped under different categories.  

- It is essential to understand the inter-relationships among the different groups of organisms.  

с
Which of the Moon's positions will cause the highest of springtides?
A)
A and B
B)
A and C
9
B and C
D)
B and D

Answers

Answer: A and C - When the moon is in alignment with the Earth and Sun, then the tides will be strongest.

Which statement describes natural selection?

Answers

Answer : 1
Explanation: Natural selection is one of the primary mechanisms of evolution

Identify the correct statement about bond formation between atoms:Required to answer. Single choice.

(1 Point)

It increases the energy and decreases stability

It decreases the energy and increases stability

It increases the energy and increases stability

It involves no change in energyose

Answers

Answer:

It decreases the energy and increases stability

Explanation:

When atoms come together, they chemically bond together to form molecules and compounds. The atoms form bonds by either sharing their valence electrons (covalent) or via the ionic charges of each atom.

The formation of bonds between atoms strengthen the molecule formed. This bond formation DECREASES THE ENERGY due to energy loss during the process but INCREASES THE STABILITY of the molecule. This means that atoms in a bond are MORE STABLE than single/individual atoms. However, bonds with higher orders are more stable than that with lower orders.

Which of these is not considered a potentially hazardous food?

Answers

Answer:

Packaged foods ( e.g. muffins, cookies or candies ) are not considered as a potentially hazardous food .

Explanation:

A potentially hazardous food is that food ( natural or man made ) which  supports the rapid and progressive growth of infectious and toxin - producing microorganism.                                                                                                               These foods are typically foods having high protein content or carbohydrate content , have high moisture content or low acidity .                                          Examples of potentially hazardous food includes meats,  eggs , cooked beans or peas ,cut fruits and vegetables , cooked vegetables, cooked rice , raw seeds and sprouts , etc.                                                                                              So , packaged foods are not considered as hazardous as they are packaged and so are protected from microbes as they  are not in contact of atmosphere . All the other foodstuff , even boiled food  is also hazardous as they provide necessary conditions required by microbes to grow like moisture, etc.

Answer the following questions:

1. Describe the purpose of mitosis.

2. Describe what is happening in each stage and what each stage looks like:
Prophase
Prometaphase
Metaphase
Anaphase
Telophase
Cytokinesis

Answers

Answer:

Not sure about the second one but the first is The purpose of mitosos is to produce more cells

Explanation:

Click to review the online content. Then answer the question(s) below, using complete sentences. Scroll down to view additional questions. Online Content: Site 1 Explain the relationship between humans and climate. (Site 1)

Answers

Answer:

The correct answer is - human and climate both depend on one other.

Explanation:

Climate helps humans in various ways such as providing a condition for agriculture, produce things. In response human activities destroying the Earth's atmosphere and climate.

Human activities resulting in climate change by increasing greenhouse gases which increase the temperature of the Earth. There are various activities like the burning of fossil fuels, pollution, which releases carbon dioxide gas into the atmosphere.

Answer:

person above or below is correct

Explanation:

Climate helps humans in various ways such as providing a condition for agriculture, produce things. In response human activities destroying the Earth's atmosphere and climate.

Human activities resulting in climate change by increasing greenhouse gases which increase the temperature of the Earth. There are various activities like the burning of fossil fuels, pollution, which releases carbon dioxide gas into the atmosphere.

Which process is more important; mitosis or meiosis

Answers

Answer:

Meiosis makes the cells needed for sexual reproduction to occur and Mitosis replicates non-sex cells needed for growth and development. Together, they provide the cellular basis for healthy growth and sexual reproduction.

Explanation:

I majored in Biology

Whose ability to use fossils in stratigraphy was identified as a major breakthrough in
sequencing rock layers?
Carl Gilbert and Willard Libby
Georges Cuvier and William Smith
James Hutton and Nicholas Steno
Stephen Calvert and Charles Lyell

Answers

William Smith and Georges Cuvier

After examining the fossil record, scientists have determined that scorpions today are much
smaller than their extinct ancestors. For example, Jaekelopterus rhenaniae, a giant scorpion
species that lived 255 million to 460 million years ago, was 2.5 meters long. Which of the
following conclusions is supported by this information?
F Scorpions living today have increased their numbers since they first appeared.
G Scorpions in the fossil record are smaller than their descendants are.
H Scorpions have changed as a result of natural selection,
J Scorpions do not appear in their original state in the fossil record.

Answers

the answer isGggggggg

After examining the fossil record, scientists have determined that scorpions today are much smaller than their extinct ancestors. Scorpions in the fossil record are smaller than their descendants. Thus option G is correct.

What is fossil ?

A fossil is  nothing but the impression living organism, commonly observed fossils are from bones, formed from shells, exoskeleton, hairs, skin imprints, and even petrified wood.

Animal footprints, tracks, trails  and  become fossilized, if a specimen is older than 10,000 years, it qualifies as a fossil. From  evolutionary perspective fossils provide the important information and insight about an organism and its habitat.

The bodies of the organisms do fossilize under right environmental conditions, these fossils are called as soft-fossils and leave an imprint of their bodies on the rock.

For more details regarding fossil, visit

https://brainly.com/question/5431129

#SPJ6

How does the bar graph (or line graph) show the pattern you found?

Answers

Answer:

It shows number increasing or descreasing due to circumstances.

Explanation:

have a good day :)

Other Questions
HURRY! A student works at a bicycle shop. When he sells a bicycle, he earns 6% of the sale price as a commission. If he sells 1 bicycle for $450 and 2 bicycles for $250 each, what is the total amount of commission he earns?A $69.00B $57.00C $6.90D $5.70 4 poitWhy is acting lawfully and ethically important for journalists?0 It helps journalists remain credibleO It keeps people focused on the facts in the news0 It helps people stay safeOAll of the above Assignment 1Question 11.1.Identify an adult education programme in your community. Based on the Unesco (1976:2)definition of Adult Education, identify keywords and state how these keywords are applied inpractice in the adult education programme.(8)1.2. Find a comprehensive definition for lifelong learning. Write explanatory notes on howlifelong learning is incorporated within the activities of the same adult education programme.(8)12Define the tormmunity education Dicaucam Ty worked 4 hours and earned $28. At this rate, how much would he earn in 9 hours? Write an equation in slope-intercept form for the line that passes through (8,1) and (4,3).y=2x+5y=1/2x+5y=1/2x+5y=1/2x+1/5 A lake near the Arctic Circle is covered by a 222-meter-thick sheet of ice during the cold winter months. When spring arrives, the warm air gradually melts the ice, causing its thickness to decrease at a constant rate. After 333 weeks, the sheet is only 1.251.251, point, 25 meters thick. Let yyy represent the ice sheet's thickness (in meters) after xxx weeks. Complete the equation for the relationship between the thickness and number of weeks. Which two statements best express the concepts Jefferson attempted to convey? what was one reason for the start of the renaissance?A.bubonic plagueB.industrail revolutionC.world war 2D.creation of the soviet union I NEED HELP REALLY BAD AND THIS IS DUE IN 5 MINSSSThe successive ionization energies for a given element are listed. How many valence electrons does it have? I need help! Please helpYes Im on nearpod lolWhich of the following is dictated by the US constitution True or false genres or categories of repertory, do not necessarily transfer from one society to the next though they may be similar. Music Can yall help me with this question How many atoms are found in the chemical formula below Al2( SiO3)2 A recipe for pie crust calls for 2/3 cup of water for every 3 cups of flour. If you doubled the recipe, you would need 1 1/3 cups of water for 6 cups of flour. Which proportions involving complex fractions could represent these ratios? Check all that apply.1. StartFraction two-thirds over 6 EndFraction = StartFraction four-thirds over 3 EndFraction2. StartFraction two-thirds over 3 EndFraction = StartFraction four-thirds over 6 EndFraction3. StartFraction 6 over two-thirds EndFraction = StartFraction 3 over four-thirds EndFraction4. StartFraction 6 over four-thirds EndFraction = StartFraction 3 over two-thirds EndFraction What was one important factor that encouraged the development of an an agrarian economy in the antebellum South? Modern Periodic Table is better than Mendeleev periodic table why PLEASE ANSWER!!!!! ill give brainliest Which of the following statements is true about using samples for research studies instead of entire populations?Using a sample is more expensive, because more care must be taken selecting subjects.Using a sample is more time-intensive, because more care must be taken selecting subjects.Using a sample is more wasteful, because data about the rest of the population is not included.Using a sample is more accurate, because more care must be taken assessing each response.Please help! Mr. Cantu is selling snow cones. He used 26.72 ounces of ice to make 4.7 snow cones. If he used an equal amount of ice in each one, how many ounces of ice are in each snow cone? Pls help with math ASAP pls in what ways can the ranking/ordering of life experiences be helpful to you please answer