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Masja [62]
3 years ago
8

The ability of the heart to vary the degree of its contraction without stretching is called:_____

Biology
1 answer:
Lera25 [3.4K]3 years ago
4 0

Answer:

I need points

Explanation:

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How many genes for a trait does the offspring have?
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A trait is a characteristic, such as color or size, that is inherited by an offspring from its parents. The genes that control a trait come in pairs, one gene from each parent.

Explanation:

8 0
3 years ago
Miohippus has been classified as a browser (an animal that feeds on shrubs and trees) while merychippus has been classified as a
Tanya [424]

One valid inference that can be made regarding the evolution of modern horses is that : Pliohippus had teeth adapted for grazing

<h3>Description of Pliohippus </h3>

From the information provided in the question The modern day horse resembling the pliohippus can be inferred to have teeth which is adapted for grazing just like the pliohippus.

The pliohippus evolved from the merychippus which is classified as a grazer. because of its longer/taller teeth the pliohippus was more adapted to grazing than been a browser.

Hence we can conclude that One valid inference that can be made regarding the evolution of modern horses is that : Pliohippus had teeth adapted for grazing

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2 years ago
How long has earth been in it’s current era
Alla [95]

Answer: Such constant change has characterized Earth since its beginning some 4.5 billion years ago. From the outset, heat and gravity shaped the evolution of the planet. These forces were gradually joined by the global effects of the emergence of life.

Explanation:

6 0
3 years ago
Please help tyyyyy :)
rosijanka [135]

Answer:

Hard

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it is hard because these are usually hard parts of an organism including shells, bones, teeth, woody trunk, stems, and branches.

3 0
3 years ago
These are the non living factors of the environment
slega [8]
The non-living factors of the enviroment are rocks, water, and sunlight.
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