Answer: German scientist Alfred Wegener
Explanation: <em>In the early 1900s, the German scientist Alfred Wegener noticed that the coastlines of Africa and South America looked like they might fit together. He also discovered evidence that the same plant and animal fossils were found along the coasts of these continents, although they were now separated by vast oceans.</em>
<span><span>Polar Easterlies
</span><span>Prevailing Westerlies (aka Westerlies).
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Tropical Easterlies (aka Trade Winds).
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Answer:
c. number and variety of organisms vs. changing environment
Explanation:
In an ecosystem populations are in dynamic equilibrium with each other, for when a population decreases the population of its predators also decreases, because the various populations are dependent on each other for survival. What we can understand from this is that the diminishing population of a species has caused a change in the environment, making that environment unsuitable for the predator population.
In other words, dynamic equilibrium occurs when the size of a population of a species varies with changes in the environment in which they live. For this reason we can state that the number and variety of organisms vs. changing environment best indicates the dynamic balance of an ecosystem.
Answer:
B. to understand the function of genes that are effected by disease
Explanation:
i took the test
Began in the water
first evolved around 3500 million years ago
began as single celled organisms
