Answer:
The correct answer would be "Adaptive radiation happens over a relatively short time".
Adaptive radiation refers to the process of evolution in which ancestor organisms diversify rapidly into a wide variety or new forms as a result of environmental changes, availability of new resources, availability of new niches, or new challenges.
Accumulation of adaptive radiations over a long period of time results in speciation.
For example, Darwin's finches adapted according to their feeding behavior.
Answer:
B. on edge
Explanation:
Answer:
higher rates of reproduction
and no back bones
Explanation:
b. reservoir
c. stream
d. pond
The one that is a man-made aquatic habitat is a reservoir. The correct option is b.
Technically speaking, “reservoir” usually refers to an expanded lake behind a dam. Such a dam could be a man-made structure created to hold freshwater, or it could be a natural development. Reservoirs are man-made bodies.
Lake is any big body of still water or gently moving water that fills a sizable inland basin. There are no well-established definitions that clearly separate lakes, ponds, marshes, or even rivers, etc.
A body of water moving on the earth, such as a river or creek. A tiny body of still water that has been created either naturally or artificially. They are all-natural water bodies.
Therefore, the correct option is b. reservoir.
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Answer:
In primary succession, newly exposed materials are growing and colonizing the area for the first time, while in secondary succession, it is an area that was previously occupied by organisms, but was then disturbed, then recolonized again.
b. False
A high birth-to-death ratio leads to larger populations. This is because the birth rate is the number of births per 1,000 people in a population, and the death rate is the number of deaths per 1,000 people in a population. Hence the statement is false.
If the birth rate is higher than the death rate, then the population will grow. On the other hand, a low birth-to-death ratio leads to smaller populations. This is because the birth rate is lower than the death rate, so the population will shrink.
Therefore, the statement "A high birth-to-death ratio leads to larger populations, not smaller populations." is False.
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