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pickupchik [31]
3 years ago
7

A species of cactus has spines. How would biologists explain how a species of cactus with spines evolved from an ancestral cactu

s species without spines ?
Biology
1 answer:
sergejj [24]3 years ago
8 0

Answer:

It needs the spines for protection

Explanation:

The cactus would develop the spines as a form of protection to protect itself from being consumed and to survive longer.

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The formation of sinkholes has become a fairly common phenomenon in the state of Florida. Most sinkholes are small, but some sin
mezya [45]

Answer:

Sinkholes can occur when<u> excessive water use lowers a water table and weakens the substrate.</u>

Explanation:

There are various causes for sinkholes, but all are related to water and how this can affect the soil. One of the causes of sinkholes is the excessive use of water. Excessive use lowers the volume of water in aquifers. As a consequence, the substrates that are above the aquifer change. They can not support large amounts of weight, leading to a sinkhole and soil with low permeability.

6 0
3 years ago
An animal in which the space between the body wall and gut is completely filled with tissues and organs is called a(n)
mario62 [17]
The animal is called a coelomate.
4 0
3 years ago
What is the outermost layer of the wall of the heart called
Aloiza [94]
The wall of the heart<span> consists of three </span>layers<span>: the epicardium (external </span>layer<span>), the myocardium (middle </span>layer<span>) and the endocardium (inner </span>layer<span>). The epicardium is the thin, transparent </span>outer layer<span> of the wall and is composed of delicate connective tissue.

</span>
3 0
3 years ago
What is the climate like in the Yellowstone forest?​
Dominik [7]

Answer:

maybe it helps

Explanation:

Daytime temperatures are often around 70°F (25°C) and occasionally 80°F (30°C) at lower elevations. Nights are usually cool and temperatures may drop below freezing at higher elevations.

4 0
3 years ago
Is the statement "I joined the science club to make my parents happy" intrinsic motivation
Bess [88]
Depends on whether the person is talking to themselves, or someone else.
If they are talking to themselves, it is indeed intrinsic motivation, as they are convincing themselves they are also happy and motivated to join the science club as it makes their parents happy.
If they are talking to someone else, it would not be intrinsic motivation. This is because they are merely telling someone that they're doing something to make their parents happy.
As it is a statement, on the whole I would say, no. It is not intrinsic motivation.
4 0
3 years ago
Read 2 more answers
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