A macromolecule is a very large molecule, such as protein, commonly created by polymerization of smaller subunits (monomers). They are typically composed of thousands of atoms or more. The most common macromolecules in biochemistry are biopolymers and large non-polymeric molecules. :D
Competition is one of the many types relationships in the ecosystem. It is an oppositional relationship because unlike in symbiotic relationships, the organisms do not peacefully coexist. Using the given information above, we can deduce that the two fungi compete with one another in terms of the resources plus the habitat.
It is function.............
Answer:
The correct answer is b. must be present in a population before natural selection can act upon the population
Explanation:
Genetic variation can be caused by mutation, recombination between chromosomes during meiosis and by fusion of two genetically different gametes during sexual reproduction.
This genetic variation is necessary for the evolution of any population. Natural selection acts on every individual and it decreases the frequency of those alleles that are not suited for the environment and increase the frequency of those alleles which helps the individual to survive in the changing environment.
Therefore genetic variation must be present in the population before natural selection act on the.
Answer:
Vagus nerve.
Explanation:
Vagus nerve is the tenth cranial nerve of the nervous system and also known as pneumogastric nerve. This is the longest nerve of the autonomic nervous system.
The vagus nerve controls the parasympathetic interference of the lungs, heart and the digestive tract. The smooth muscle of the digestive viscera is innervated by the vagus nerve. This nerve has the ability to innervates both in the stomach and the lungs.
Thus, the correct answer is option (4).