An archaeology student is creating a model of a cliff wall. He is including representations of different types of fossil organisms in the model. Question: Which fossil should be placed in the bottom layer of the model cliff wall for the model to be scientifically accurate?

the answer is d. chordata

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation:

meiosis is the first to occur after the nuclei of opposite of opposite mating types fuse

the correct answer to this question is #5