How do I connect letters to right answer?

Please give clearer explanation?

Question:
A population of mice has a genetic makeup of 90% M alleles (black fur) and 10% m alleles (gray fur).

Leslie argues that an organism called a Euglena is a plant because it is eukaryotic, has a nucleus, makes its own food, and is unicellular. Where is Leslie's error? Plants do not make their own food..

Answer:

Effective food supply was most likely an effect on society that resulted from improvements in blood handling during World War I and World War II.

A spring is a natural discharge point of subterranean water at the surface of the ground or directly into the bed of a stream, lake, or sea. Water that emerges at the surface without a perceptible current is called a seep. Wells are holes excavated to bring water and other underground fluids to the surface.

The image shows a cross-section of land scape.

B)Phosphorus has a larger atomic mass.

As we move right in the periodic table, both atomic number and atomic mass increases. Magnesium comes under S-block elements (Group 2) and Phosphorus comes under P-block elements (Group-15).

Consumers are dissatisfied with the way that large corporate  farms are treating nature's natural resources.

Angelica suffers from lupus disease.people with this disease are extremely sensitive to sun light.

A scientist look for in a plant that would identify it as a club moss rather than a liverwort.

Chromosome DNA Diploid EggGamete Haploid Meiosis Replication Sexual Reproduction Sperm..
This is an organism or cell with two sets of chromosomes.
This is a haploid cell with half the reproductive information from the parent.
This is a cell or organism having half of the diploid chromosome number, symbolized by "n".

Fungi are a food source for animals and humans. Fungi produce oxygen to breathe. Fungi destroy rocks and minerals. Fungi are natural recyclers.

Answer with explaination:

 An attempt to document and identify all biological species living in some defined area, usually a park, reserve, or research area. The numbers of species on earth is rapidly diminishing, knowing what species are around will give us an idea of what we're losing, how our actions are affecting the environment.