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likoan [24]
3 years ago
6

What contracts to pump blood out of the heart?

Biology
2 answers:
OlgaM077 [116]3 years ago
6 0
Left ventricular must be right answer
larisa86 [58]3 years ago
6 0

the ventricles is the answer

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Examine the leaves of a palm tree.
Rom4ik [11]

Answer:

Examine the leaves of a palm tree. Which statement most specifically describes a palm tree?

Palm trees are monocots.

Palm trees are angiosperms.

Palm trees are flowering plants.

Explanation:

Those three features best describes a palm tree, they are angiosperms because they produces seeds and flowers

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3 years ago
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A population of mussels was observed in a particular ecosystem. Crabs have recently been observed occupying this ecosystem, whic
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Mussels are molluscans and are freshwater animals. The change in the environment led to new traits of mussels, it underwent natural selection and the thick shells have high chances of survival.

<h3>What is natural selection?</h3>

Natural selection is a process of nature that eliminates the organism with less survival and unfit traits while selecting the organisms with better traits of survival in the altered conditions.

The arrival or the introduction of the crabs in the environment altered the previous habitat of the mussels and led to the adaptation of the better trait quality in the mussel species.

The trait of the thick shells underwent natural selection as they were favoured for the changed conditions. The mussel having thick shells have high chances of survival over thin-shelled mussels as the crab will find it hard to attack the thick-shelled mussels.

Therefore, option A. change in environment, option B. natural selection and option E. chances of survival are the correct statements.

Learn more about the natural selection here:

brainly.com/question/10715606

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2 years ago
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How do producers create energy for survival?
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A

Explanation:

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Fossil fuels such as oil and coal are made from highly condensed ___ in the soil.
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A. Carbon

It's carbon because it is in all plants and fossil fuels. Hope this helps and is correct.

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Have they? Huh. weird.
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