Answer:
A. Repressor proteins can be activated and bind to regulatory sequences to block transcription.
Explanation:
its A
The answer is D. The dark mice could not camouflage on the white beach sand hence were more conspicuous. Therefore, the Predators were able to easily spot them and prey on them. Therefore, the phenotype of dark mice reduced in the population since most mice were not able to reach maturity and pass down their traits. The allele for white fur, therefore, increased in the population. This is the process of natural selection at work.
Answer:
X: Producers undergo photosynthesis. Y: Decomposers return carbon to the soil and release waste.
Explanation:
Producers utilize carbon dioxide present in the atmosphere as a source of carbon for the production of organic compounds during the process of photosynthesis. According to the flow chart the producers are consumed by the consumers. (Box 3) Decomposers break down the dead consumers and give back the carbon present in the bodies of the consumer to the atmosphere in the form of carbon dioxide.
Atmospheric carbon dioxide ---> X ---> Consumers eat producers ---> Y
