Answer:
(A) speciation.
Explanation:
Shrinking of water bodies and development of deserts since the Pleistocene ice age produced new vacant niches that could be inhabited by organisms such as fishes. Production of new isolated streams, ponds, and springs allowed the fishes to occupy these new water bodies. Accumulation of genetic variations to become adapted to their new habitat resulted in the evolution of several new species of fishes with many different genetic traits. This represents speciation due to geographical isolation.
Answer:
a) fossils of the same organism have been found on different continents
Explanation:
One sort of confirmation that backings Wegener's theory is that fossils of a similar life form have been found on various mainlands. Since Wegener couldn't recognize the reason for mainland float, most geologists rejected his thought. Figure 13Alfred Wegener Although researchers dismisses his hypothesis, Wegener kept on gathering confirmation of mainland float and to refresh his book.One kind of evidence that supports wegeners hypothesis is that: fossils of the same organism have been found on different continents Based on this finding, we can draw a conclusion that million years ago, all the lands on the face of the earth were not separated by sea so the animals could migrate from one continent to another.
The proposal that a human sperm contained a miniature human being is consistent with the now-discredited theory of development known as preformation theory.
Preformation theory, a historically well-liked belief that creatures develop from miniature replicas of themselves, has a long history in biology. Preformationists thought that the shape of living things already existed in reality before their growth, as opposed to being put together from components.
Hippocrates and Anaxagoras were the first thinkers to put forth a preformation theory, with Hippocrates proposing that the zygote contains all of the adult's structural components and Anaxagoras asserting that the paternal semen contains all of the child's components.
To learn more about preformation theory, theory of development and preformationist here,
brainly.com/question/9728994
#SPJ4
