Their population went down because the grass wasn't good
The right option is; C) anaerobic respiration; lactate
Anaerobic respiration is a cellular respiration that occurs in absence of oxygen. In this process, glucose is broken down into molecules without oxygen to produce energy which is transferred to the cell with the production of lactic acid. Anaerobic respiration is used by eukaryotic cells such as in human muscles during extraneous activities when the oxygen supply is low. There is high production of lactic acid (lactate) which provides the required energy (ATP molecules) for cellular activities. This weaken the muscles and it can cause painful muscle cramps.
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Environmental factors such as diet, temperature, oxygen levels, humidity, light cycles, and the presence of mutagens can all impact which of an animal's genes are expressed, which ultimately affects the animal's phenotype.
Explanation:
I'm not sure but hope it helps.
There are five mechanisms involve in diversity of organisms:
genetic drift, mutation, natural selection, gene flow and non random mating.
Explanation:
Genetic drift: It is a mechanism in which frequency of the allele changes within a population due to random sampling. It causes decrease in diversity in organism and can result in new species.
Mutation: Mutation in the genes is the most important reason of diversity.the change in DNA causes introduction of new alleles. Harmful mutations do not le species evolve by delimiting them from reaching sexual maturity.
Gene flow: The allele flow happens when a new gene is introduced into a population either by immigration or random mating. when two populations of same species share genes, variation occurs.
Natural selection: The favourable traits for survival are transferred to the offspring. It allows them to adapt better to the environment. It allows maintenance diversity of organism.
Non random mating: The mating between the individual with varied genotype will result in genetic variation.