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Zepler [3.9K]
3 years ago
11

The size of plant leaves in different species of plants is an example of plant adaptations. Is true or false ?

Biology
1 answer:
skelet666 [1.2K]3 years ago
7 0
The answer is true.
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“a phylogeny is just a hypothesis” what does that statement mean
andreev551 [17]

Answer:

Scientists consider phylogenetic trees to be a hypothesis of the evolutionary past since one cannot go back to confirm the proposed relationships.

Explanation:

Basically it is a hypothesis from before hypothesis actually were called hypothesis

4 0
2 years ago
Which of the following describes an independent variable?
maksim [4K]

Answer: An independent variable is exactly what it sounds like. It is a variable that stands alone and isn't changed by the other variables you are trying to measure.

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1 year ago
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All of the following are effector responses that increase body temperature, EXCEPT A : vasodilation of dermal blood vessels B :
Ainat [17]

Answer: Option A

Explanation:

The effector response that increases the body is not associated with vasodilation of dermal blood vessels.

The skins's immense blood supply helps in temperature regulation of the body. The dilated blood vessels helps in heat loss and lowers the body temperature.

Unlike, them the vasoconstriction retains heat and increases the body temperature.

So, the correct answer is option A

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3 years ago
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Stage of photosynthesis​
borishaifa [10]

Answer:

Photosynthesis takes place in two stages: light-dependent reactions and the Calvin cycle. Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH. The Calvin cycle, which takes place in the stroma, uses energy derived from these compounds to make GA3P from CO2.

Explanation:

<h3>I hope this helps!</h3>
8 0
2 years ago
The sole of a gecko's foot is covered with millions and millions of small, dry "hairs" that make direct contact with surfaces, a
tamaranim1 [39]

Answer: Van der Waals forces

Explanation:

Van der Waals forces are weak intermolecular forces that depend on the distance between two particles. They are caused by correlations in the change in polarization between two nearby particles. To put it in other words, when a particle changes its polarization (becomes more positive on one end and more negative on the other), so does the adjacent particle, and the next one, and so on. This causes these particles to stick together weakly.

The tiny "hairs" increase the surface area of the gecko's feet in contact with the wall, which makes the bond stronger and allows it to support all of its weight.

Because experiments have shown that geckos stick well to both hydrophobic and hydrophilic surfaces, we can assume there aren't any hydrogen bonds present.

Ionic bonds can't be present either because geckos wouldn't stick to electrically neutral surfaces, as these bonds require charged molecules.

6 0
3 years ago
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