Answer:
Throughout their life cycles, frogs have an important place in the food chain as both predators and prey. As tadpoles, they eat algae, helping regulate blooms and reducing the chances of algal contamination. Frogs are an important source of food for a variety of animals, including birds, fish, monkeys and snakes.
Explanation:
It is believed that this happens because some signals that regulate development are the same between different species and because <span>they share ancient genes. </span>These ancient genes are expressed during a middle "phylotypic stage" of embryonic development for all species.
For example, human and animal embryos go through very similar stages of early development and share similar features such as tails and gill-like structures. The major difference appears to be how long it takes to reach each of these same stages.
Answer:
When Kelly drew the diagram, the area marked Y -which includes cast and print- involves mold filling minerals and sediment (option D).
Explanation:
A fossil is the evidence found of an organism that lived many years ago, and consists of organic remains - such as bones - or impressions that remained in the soil.
The fossil record of a living being occurs when it dies and its remains, which are buried, when decomposing leave an impression. This impression - as a mold - is subsequently occupied by minerals and sediment that describe the approximate form of the organism.
In the Kelly diagram, the <u>area labeled Y shows not only the impression of the organism that was found, but also the minerals and sediments that were responsible for filling said mold</u>.
Learn more:
brainly.com/question/8839653
Genetic drift is a process in which allele frequencies within a population change by chance alone as a result of sampling error from generation to generation. Genetic drift is a random process that can lead to large changes in populations over a short period of time.
