Answer:
because of the constant change of the earths surface
Explanation:
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What are the experiments?
A zygote is the product of fertilization. The diploid zygotes of the four organisms seen here all underwent Mitosis and differentiation in order to produce the four very different embryos. In mitosis cell divison occur in which mother cell divide to form two daughter cell . When we talk about the cell differentiation , it is the process in which cell changes from one form to another.
A. theory because it is an explanation that is supported by extensive observations, experimentation, and reasoning.
Explanation:
Evolution can best be described as a theory because it is an explanation that is widely supported by extensive observations, experimentation and reasoning.
Theories are formulated after careful observation into a particular phenomenon.
- Most theories provides a vivid explanation into an observed event or process.
- The theory of evolution is one of such theories that suggests that an organism changes in order to adapt to its environment.
- Some of the key figures who contributed to the study of evolution are J. B Lamarck, Charles Darwin, Williams Smith e.t.c
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