Answer:
Dorsal lol, its contracts and pumps blood to the aortic arches.
Option D because Earth is closer to the sun than Mars
Answer: Phenotype
Explanation:
The phenotype is the set of physical characteristics of an individual, that make it different from other individuals and are evident to the eye.
While the genes inherited from the parents determine the genotype of the individual, that's not enough to fully determine how it will look when it develops, as the ambient where it will grow takes a great part of it. Those factors are called epigenetics.
How an individual will look, its phenotype, is a result of its genes and the epigenetic factors.
True
All somatic cells have same genes but the genes whose product is not needed are turned off. Some genes are expressed constitutively and some genes are turned off and on depending upon the requirement of proteins.
Benthos live in the benthic zone. The benthic zone is the lowest level in a body of water. Bentho organisms include things such as crustaceans and polychaetes
