I think the hydra lacks the specialized cells for touch and chemical detection. On the other hand earthworms have touch, light, vibration and chemical receptors along the entire body surface. Both of them are invertebrates (those animals without a backbone), they include insects, worms, jelly fish, spiders among other animals.
C. The process by which green plants and some other organisms use sunlight to synthesis food from carbon dioxide and water.
Answer:
ab1568
Explanation:
these are the group belong to phlyum
Correct answer: Genetic Drift
Genetic drift is defined as the random change in the allele frequency of a population is changed by chance or due to random changes in the environment. It is a random process that can lead to large changes in the overall population in a short period of time. It is a mechanism of evolution and it does produce the adaptation.
Hence, the correct answer would be genetic drift.