Which life-forms appear to be extinct?
a. Sponges, Insects, and flowering plants.
b. Bony fishes, dinosaurs, and mammals
c. Sponges, insects, reptiles
d. trilobites, ammonoids and dinosaurs
Which life-form was most abundant 250 million years ago?
a. dinosaurs
b. reptiles
c. bony fishes
d. trilobites
Answers
Answer:
D for the first question and B for the second
Explanation:
trust
Answer:1.) D (trilobites, ammonoids and dinosaurs)
2.) B (reptiles)
Explanation:
Based on the graft
Related Questions
Helpp !
One part of the immune response that is specific to a particular pathogen is
the production of
O A. lysozyme molecules
O B. neutrophils
O C. macrophages
D. memory cells
Answers
Answer:
Memory cells
Explanation:
Just like with vaccines, the immune response to fight a specific pathogen
What percentage of the F2
generation had the genotype TT?
A 50%
B. 100%
C. 25%
Answers
Answer:
c
Explanation:
n this lab, you will simulate birds with three different beaks. After watching the birds feed, you will remove fruit to simulate a change in the environment. What question are you answering by doing this observation? Write it by filling in the blanks below.
What is the effect of…
…on…
Answers
Answer:
BOX 1: The independent variable is the type of food available.
BOX 2: The dependent variable is the frequency of each type of beak (or number of birds with each beak type).
Explanation:
TRUST ME BRO
PLEASE HELP ASAP WILL GIVE BRAINLEST TO BEST ANWSER!
after reading about epigenetics in your book, which do you think is the most important in shaping the person, genes or the environment?
Answers
What type of mountain ranges form at convergent plate boundaries
Answers
Answer: Cape Fold Mountains
Explanation:
Which examples describe biotic factors interacting with the environment?
Answers
Answer:
Examples of biotic components:
animals, plants, bacteria etc...
Is this the answer you want?
Answer:
D: Butterflies resting on the flower of a plant
Explanation:
I hope this helps! i took the test if y'all needed to know
PLEASE HELP ITS 18pts
Assess why cellular respiration is important to all organisms and describe where it occurs in the cell.
Answers
Hope this help. Sorry if it has bad grammar
Which explains why the reflex reaction is important in certain situations?
O A. Motor neurons cannot form action potentials.
O B. The brain has no control over motor neurons.
O C. Interneurons are too slow at sending signals through the spinal
cord.
O D. Sensory neurons do not use neurotransmitters to send signals.
Answers
Answer:
Answer:c
Explanation:
The reflex reaction is important in certain situations because interneurons are very slow to send signals through the spinal cord.
What is the reflex?The reflex is an automatic (read immediate and constant) bodily reaction to stimulation. According to Pieron, the reflex corresponds to any activity or variation of activity of an effector (muscle, gland, etc.)
With this information, we can conclude that the reflex reaction is important in certain situations because interneurons are very slow to send signals through the spinal cord.
Learn more about reflex in brainly.com/question/6023003
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2. How closely did the buoy follow the movement of the surface currents in your world?
Answers
Answer:
?
Explanation:
What are characteristics of adhesion, examples of adhesion, examples of things that are non-adhesive in science?
Answers
Answer:
adhesion is when a molecule is attracted to a surface or other things. An example is how water glides on a glass when it falls down. The water is adhesive to the glass.
Answer:
shear adhesion
Explanation:
on edu
What macromolecules make up most of the structure that is shown?
A. carbohydrates
B. lipids
C. nucleic acids
D. proteins
Answers
Answer: B. Lipids
Explanation:
The macromolecules that make up most of the structure that is shown is lipids.
What are lipids?Lipids are organic compounds that consists of fatty acids or their derivatives and are insoluble in water but soluble in organic solvents.
From the given image we can conclude that, the macromolecules that make up most of the structure that is shown is lipids.
Learn more about lipids here: https://brainly.com/question/17352723
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What would be the mRNA base sequence formed from ACC CTG GTA GCT
Answers
Answer:
Explanation:
DNA utilizes four bases, adenine (A), guanine (G), cytosine (C), and thymine (T), in its code. RNA also uses four bases. However, instead of using 'T' as DNA does, it uses uracil (U). Therefore, if your DNA sequence is 3' T C G T T C A G T 5', the mRNA sequence would be 5' A G C A A G U C A 3'.
Which glial cells support neurons metabolically? A. astrocytes B. microglial cells C. Schwann cells D. oligodendrocytes
Answers
Answer:
A. astrocytes
Explanation:
They are well known providers of physical and metabolic support to neurons in an organisms. They are excelled companions in brain energy metabolism. primarily because their anatomical position places them between blood vessels and neurons which allows them to be naturally effective glucose uptake from blood
What substance influences the reaction but does not participate in the reaction
Answers
a catalyst, because it is a substance that speeds up the rate of a chemical reaction but is not consumed during the course of the reaction.
Answer:
i thinks its a catalyst
Explanation:
Are pictures of relationships
Answers
I do not know if it's okay.
Which pedigree symbol is used to represent a female carrier of a recessive X-linked trait?
Answers
Answer:
B.
Explanation:
Answer:
Half-Circle
Explanation:
Drag each label to the correct location on the image.
Identify the remaining processes and components of the carbon cycle.
fossil fuels form
combustion
atmospheric CO2
organisms release CO2
plants use CO2
consumption
factories and
vehicle emissions
decaying organisms
Answers
Answer:
consumption released H20. factories used C02. vehicle emissions C02. and decaying organisms is H02
Answer:
Got it right
Explanation:
please help Mark and Vikki live in two different areas of North America. The temperature in Mark’s town today is 30°F. The temperature in Vikki’s town is 82°F. In both towns, the relative humidity is 90%. Is the amount of water vapor in the air the same in Mark’s and Vikki’s towns? Explain your answer.
Answers
Answer:
I think that the amount of water vapor in the air will be different because in Mark's town, it is cold and water in the clouds might turn to ice and come down as snow. And in Vikki's town, it is very warm so the water vapor might come down as rain.
I hope this helped! I was in a rush but I'm positive that this is correct.
Which of the following best describes why polar bears are a sub-species of brown bears instead of a completely separate species? A. Because they both have thick fur and 4 legs, so they are very similar B. Because they both live on the same continent, so they can’t be two separate species C. Because they can still breed in the wild. Once they no longer mate with brown bears, they will be considered a separate species D. All of the above
Answers
Answer:
d
Explanation:
what responsibilities do humans have on the environment
Answers
Answer: Environmental responsibility. ... Respect the environment, making rational use of natural resources and taking steps to prevent pollution from the different processes involved in our industrial operations. Promote the sustainable use of raw materials and natural resources. In fact, our cognitive ability and understanding of nature obliges us to maintain the integrity of the environment. So we must change how we influence the land. We must respect the natural order of things and find a way to live accordingly.
Accordingly u can take points from this and then add to ur ans. I hope i was helpful
Answer:
The role of man in the protection of the environment, is to carry his responsibility of ensuring that whatever you do ,eat ,work, play, live, is of such a nature that it is not causing irreversible damage to the environment, and to limit the damage you may be causing by doing the things you do.
We can protect the earth by protecting trees, natural vegetation, water, natural resources, electricity, etc. We should sternly follow all the possible actions to control the environmental pollution and global warming.
HOPE THIS HELPS : D
Explanation:
Which of the following leaves the
biosphere once put back into the
atmosphere?
A Nutrients
B. Heat
D. Water
Answers
How can you distinguish the dorsal and ventral sides of an earthworm?
Answers
Answer:
Yes
Explanation:
The earthworm has a rounded dorsal (back) surface and a flatter ventral (belly) surface. Usually the dorsal surface is darker than the ventral surface (though sometimes this is obscured in the preservation process).
Answer:
The ventral side is lighter than the dorsal side and more pale and kind of flattened unlike the dorsal side which is darker and round.
Explanation:
Which best describes a theory? an untested claim a well-supported conclusion a proven fact an educated guess
Answers
Answer:
System of ideas used to explain something
PLEASE HELP- EASY 7TH GRADE WORK!!!
Why is overpopulation dangerous?
A= There will be no competition for resources.
B= There will not be enough air for all members of the species to breathe.
C= There will not be enough food for all members of the species to survive.
D= Overpopulation will result in drastic climate change.
Answers
Answer:
D= Overpopulation will result in drastic climate change.
Explanation:
overpopulation is bad because the increased demand for resources such as fresh water and food, starvation and malnutrition, consumption of natural resources faster than the rate of regeneration, and a deterioration in living conditions.
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Use the diagram below to answer questions 3 and 4
3.Identify one trait, other than beak characteristics, that would contribute to the survival
of a finch species and state one way this trait contributes to the success of this
species.
4. Explain Why are certain beak characteristics more advantageous than others?
Answers
Answer:
3. Size could
4. Beak's are advantageous because they have to be fit to eat the seeds that they need
Explanation:
size can affect because the bigger birds can fight the smaller birds off when they are eating the same product. Even with same beaks bigger birds will have an advantage.
HELPPPP
can someone tell me 2 producers, 2 primary consumers, 2 secondary consumers, 2 tertiary consumers and 2 quaternary consumers in a freshwater lake.
Answers
Answer:
hope it helped
Explanation:
2 producers are bacteria and algae
2 primary consumers are microscopic zooplankton and snails
2 secondary consumers are fish and stonefly
2 tertiary consumers are eels and trouts
2 quaternary consumers are some very large birds like the eagle and other big fishes like shark or reptiles like crocodiles and so on
Answer:
2 producers are bacteria and algae
2 primary consumers are microscopic zooplankton and snails
2 secondary consumers are fish and stonefly
2 tertiary consumers are eels and trouts
2 quaternary consumers are some very large birds like the eagle and other big fishes like shark or reptiles like crocodiles and so on
how does natural selection apply to an individual?
Answers
Answer:
read below
Explanation:
Individuals with adaptive traits, traits that give them some advantage are more likely to survive and reproduce. These individuals then pass the adaptive traits on to their offspring. Through this process of natural selection, traits are transmitted through generations and generations.
What did plants produce in Priestley's experiments that allowed a candle to continue burning in a closed container?
A. Carbon dioxide
B. Glucose
C. Oxygen
D. Water
Answers
What is the name for any primate that walks on two legs?
A. Monkey
B. Human
C. Neanderthal
D. Hominid
Answers
What constitutes the majority of the debris found in the “garbage patch" located in the North Pacific Ocean?
Answers
Answer:
Old Fishing Gear
Explanation:
The patch, in fact, is made up mostly of abandoned fishing gear. According to the study, fishing nets alone make up 46 percent of the 79,000 tons of garbage.