PLEASE HELP ME !
When did whale ancestors begin living full time in the water?
A) before they nursed under water
B) after they began eating a carnivorous diet
C) before they evolved gills
D) after they lost their hind legs
Answers
Answer:
40 million years ago
The earliest whales that we think were fully aquatic, that is, they never left the water, are found around 40 million years ago, during the middle Eocene. That means that the transition from terrestrial animals to fully aquatic animals took about 12 million years.
Explanation:
Answer:
After they nursed under water
Explanation:
Related Questions
what is homeostasis?
the body's way of coping of outside factors
the body's ability to heat up and cool down
the body's natural way of maintaining equilibrium or balance
the body's standard heart rate
Answers
Answer: C or if there is an E for all the above
Explanation: Homeostasis refers to the body’s ability to maintain a stable internal environment (regulating hormones, body temp., water balance, etc.).
How is active transport different from passive transport? (Select all that apply.)
Answers
Answer:
One uses energy and one does not.Explanation:
Can you mark me as BRAINLLEST PLEASE!!!!!!!!!! :-( T_T (ToT)( T_T) (x_x)Which renewable energy source would be MOST appropriate for lands near a flowing stream or river?
microhydro
geothermal
wind energy
O biofuels
Answers
Answer:
microhydro
Explanation:
just look at a picture lol. Also I got it right on a test :)
Answer:
microhydro
Explanation:
We inherit of
our genes from
our mothers and
1/2 from our
fathers.
A. 1/3
B. 1/4
C. 1/2
D. 1/6
Will give brainliest to whom is correct
Answers
Answer:
What i the question here? if you are asking how much of our genes we inheret from our mothers then it would be c
Explanation:
two halves is a whole. we also have 26 chromosomes from each parent.
Which of the following is digested first?
protein
starch
fat
sugar
Answers
Starch
Explanation:
Digestion begins in the mouth. The teeth break down food from chewing through mechanical digestion.
Chemical digestion also begins in the mouth. Saliva moistens food, but it contains an important enzyme called amylase. This enzyme breaks down starch into simple sugars.
So, the first compounds that are digested are starch.
The red line in this diagram represents: *
Answers
2. What does it mean if a micrograph is "false-colored?"
Answers
It means that the object has color created by the computer since electron microscopes really see in black and white. ... They usually range in sizes between 5-50 micrometers, they are surrounded by a cell membrane, and usually can't be seen without a microscope.
A micrograph is said to be false-colored when there is color created by the
computer involved in the printing of the picture.
A micrograph is a pictorial representation of objects seen under a
microscope. The view of objects under microscope is usually in black and
white color. The micrograph is therefore meant to also be in black and white.
This is the reason why when there is a color in the micrograph, it is referred
to as being false-colored.
Read more on https://brainly.com/question/25309587
what significant role does dna play in formation and development of an organism
Answers
Answer:
DNA contains the instructions needed for an organism to develop, survive, and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies.
Explanation:
DNA contains the instructions needed for an organism to develop, survive, and reproduce.
What is DNA?
Cells' capacity to store, retrieve, and translate the genetic instructions necessary to create and maintain a live organism is essential to life.
This genetic material is transmitted from one generation of an organism to the next through the reproductive cells of the organism and from one cell to its daughter cells during cell division.
Every living cell contains these instructions as part of its genes, which are the information-containing components that define the traits of a species as a whole and of the individuals within it.
Therefore, DNA contains the instructions needed for an organism to develop, survive, and reproduce.
To learn more about DNA, refer to the link:
https://brainly.com/question/264225
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25 Which graph best shows the amount of the
lighted part of the Moon that an observer on the
Earth would see during 1 month, beginning with
the new moon phase?
Answers
Answer:
Graph (2). The up then down line.
Explanation:
The new moon you would see no light and then gradually reach the full moon (seeing all light) then go back to waning to start the cycle all over again.
Which type of tissue produces movement?
A. Nervous tissue
O B. Epithelial tissue
O C. Connective tissue
O D. Muscle tissue
Answers
Hope it helps
The type of tissue which produces the movement is known as Muscle Tissue. The correct option is D.
Muscle tissue is made up of cells that have the unique ability to shorten or contract in order to move bodily parts. The tissue is densely cellular and rich in blood capillaries. Because the cells are long and slender, they are sometimes referred to as muscle fibers, and they are typically organized in bundles or layers surrounded by connective tissue.
Actin and myosin are muscular proteins found in muscle. Skeletal muscle tissue, smooth muscle tissue, and heart muscle tissue are the three types of muscle tissue.
To learn more on muscle tissue, click here:
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Which will increase the rate of a chemical reaction?
Answers
hurry due in five min plz
Answers
Answer:
It's either D or B, I'm not really sure
Explanation:
In 1972, EPA issued a cancellation order for DDT based on its adverse environmental effects, such as those to wildlife, as well as its potential human health risks. Since then, studies have continued, and a relationship between DDT exposure and reproductive effects in humans is suspected, based on studies in animals.
Human health effects from DDT at low environmental doses are unknown. Following exposure to high doses, human symptoms can include vomiting, tremors or shakiness, and seizures. Laboratory animal studies showed effects on the liver and reproduction. DDT is considered a possible human carcinogen.
What is the primary function of
vesicles?
A. To make proteins
B. To make energy (ATP)
C. To make the rough ER rougher
D. To transport proteins and
other substances
Answers
Answer:
D. To transport proteins and other substances
Explanation:
AP Bio.
question one : when two plates converge, they are what?
a) moving away from each other
b) moving towards each other
c) sliding along each other
d) colliding with each other
question two : when two plates converge, they are what?
a) moving away from each other
b) moving towards each other
c) sliding along each other
d) moving towards, then moving away from each other
question three : during sea-floor spreading, how would you describe the age of rocks the further away from the ridge?
a) the rocks are youngest the further away you move from the ridge
b) the rocks are oldest the further away you move from the ridge
c) the rocks are the same age no matter how far away from the ridge you move
d) the rocks do not age
Answers
Q2. They are c. sliding along each other (in a processes called “subduction”)
Q3. Rocks furthest away from the ridge are b. oldest the further away you move from the ridge. The youngest rocks can be found closest to the mid ocean ridge.
The types of movies that one likes is influenced by learned behaviors.
Please select the best answer from the choices provided
OT
OF
Answers
Answer:
The answer is True!
Explanation:
Hope that this helps! Please mark me the brainliest! Peace and Love
What are some applications of biotechnology?
Answers
Answer:
Health careAgricultureIndustrial uses of crops/other productsEnvironmental usesCredit goes to: wikipedia
I hope this helps!
Simple organic molecules combine to make larger molecules. Which statement best describes the disruption of the bond between two carbohydrate monomers? (3 points) Dehydration synthesis will remove water molecules, forcing the bond to break. Energy will be stored in the bond between monomers through hydrolysis. The bond in the complex carbohydrate will be broken due to enzyme activity. The helium and hydrogen atoms in the backbone of the sugar will be broken.
Answers
Answer:
The correct answer is - The bond in the complex carbohydrate will be broken due to enzyme activity
Explanation:
Carbohydrates are macromolecules formed by the combined simple monomer subunits to make a larger subunit or chain of molecules. Dehydration synthesis is the process required for the build-up of these larger molecules and for this they require energy.
The hydrolysis reaction is used to break the hydrogen bond of these monomer backbones by the addition of water which releases energy. Complex carbohydrates are digested or the bonds present in between their monomers are broken down due to the activity of the series of the enzymatic reaction.
Answer: The bond in the complex carbohydrate will be broken due to enzyme activity.
How are signals “transmitted” into the cell?
Answers
Answer:
Generally, it is the brain that sends signals to parts of the body. It'[s the main headquarters for transmissions and orders.
Explanation:
Inside cells, electrical signs are passed on along the cell layer. Second, for correspondence between cells, the electrical signals by and large are changed over into compound signs passed on by little courier particles called synapses.
See the case 1 and 2
These are the question I will give brainliest
A. If you remove a bulb from case 1 , will the other bulb still light? Explain why.
B. If you remove a bulb from case 2, will the other bulb still light? Explain why
C. In which circuit do you think he bulbs glow. Brighter? Explain why
Points and brainliest
Answers
Answer:
A. Yes
it does not affect other circuit as connected in parallel
B. No
current does not flow
C. Case 1 , same current
Which of these correctly complements the molecule with its function? a Carbohydrate—manufactures cell membranes b Nucleic acid—supplies energy to cells c Lipid—stores genetic information d Protein-provides structure; builds muscle
Answers
Answer:
D
Explanation:
Cons of Biofuel
What are de cons of biofuel? Pleas help me
Answers
Regional Suitability. Despite pushes for Jatropha, Camelina, and algae, it is more likely that biofuel feedstock will be grown on a regional basis. ...
Food Security
Land Use Changes
Monoculture, Genetic Engineering, and Biodiversity
Global Warming
How do climates of cities near mountains compare?
Answers
Answer:
if your on a mountian it colder
Explanation:
Cells need to bring in molecules to carry out cellular processes. Often, this requires
moving the molecules across the cell membrane against the concentration gradient.
How do these molecules get into the cell?
Answers
Answer:
Active transport
Explanation:
The text is most likely speaking about active transport, such as endocytosis and exocytosis, which is essentially the process in which a cell uses to consume larger particles/molecules and expose of them, respectively.
In guinea pigs, the allele for a smooth coat (S) is dominant over the allele for a rough coat (s). Explain how you could find out whether a guinea pig with a smooth coat is a hybrid or a purebred.
Answers
Answer:
Explanation:
First of all you need to have ss because this is recessive.
Secondly there is 2 option for Dominant one
It could be Ss or SS so if you wanna know what is what you need to use recessive gen
S- ss if all genes are hybrid dominant one would be SS if some genes aren’t hybrid dominant one would be Ss
Why is it more important to check for errors during DNA replication than during protein synthesis? O A. An error in transcription affects only one cell. B. Proteins function correctly even with errors. O C. Errors in DNA replication affect only one cell. D. Errors in DNA do not have any negative effects
Answers
Answer:C
Explanation: An error in DNA replication would affect many generations of cells.
Give two examples each of centripetal force
Answers
Answer:
Spinning a ball on a string or twirling a lasso: Here the centripetal force is provided by the force of tension on the rope pulls the object in toward the centre. Turning a car: Here the centripetal force is provided by the frictional force between the ground and the wheels.
Explanation:
Explain How are speed and pressure of a fluid related?
Answers
Answer:
The higher the velocity of a fluid (liquid or gas), the lower the pressure it exerts. This is called Bernoulli’s Principle. Fluid pressure is caused by the random motion of the fluid molecules. When the fluid speeds up, some of the energy from that random motion is used to move faster in the fluid’s direction of motion.
pls help me pls idk how to do this
Answers
Answer:
Form a concave meniscus.
Explanation:
Putting water in a drinking glass, it will try to climb up the sides just a little bit, forming a concave meniscus.When pouring the water out, you have to visualize that the water still prefers to adhere to the glass than fall down under gravity, so if it at all can, that is what it will do.
How far is the sun from the earth and how long does it take to get to the sun from earth?
Answers
Answer:
Earth's closest approach to the sun, called perihelion, comes in early January and is about 91 million miles (146 million km), just shy of 1 AU. The farthest from the sun Earth gets is called aphelion. It comes in early July and is about 94.5 million miles (152 million km), just over 1 AU.
1. What caused the Lake Missoula
Answers
Answer:
The lake was the result of an ice dam on the Clark Fork caused by the southern encroachment of a finger of the Cordilleran Ice Sheet into the Idaho Panhandle. It was the largest ice-dammed lake known to have occurred.
Hope this helps:)