What type of cells are produced after fertilization occurs and the gametes combine?

Answer and explanation;

• The moisture pertains to its survival due to its respiratory surface. Such that too much water and the earthworm could die and  too little water and the earthworm could dry up and die. Keeping their skin moist allows them to respire.
• Earthworms are important as they plow the soil by tunneling through it, which provides the soil with passageways through which air and water can circulate.
• The activity of the earthworms depends directly on soil moisture and temperature. They become active when soil thaws in the spring and move deeper in late summer as the soil dries.

Answer:

A heterozygous trait contains two different allelic forms of a gene in which one is a dominant allele and one is recessive allele. If there is a crossing between two plants that are heterozygous for their trait then the probability of expression of the dominant allele is 3/4.

So according to this question plants are heterozygous that means the genes would be like Pp and Pp. Here P indicates the purple color allele which is dominant and p indicates recessive white color allele.

Therefore cross between these two will give genotypes PP, Pp Pp, and pp. So according to the law of dominance that says dominant allele will express itself, therefore, probability of purple-flowered offspring is 3/4 because 3 out of four genotypes have the dominant allele.

I believe the answer is: D.Measuring the rate of squirrel births in a woodland habitat

Biology comes from word "bios" which mean live and "logos" which mean study. Biology is science that study the living things. Star is not living things and it should be studied in astrology. Bank account also not living things, it should be studied in economy. Building also not living things, it should be studied in physics or engineering. Squirrel would be the only living things mentioned in the option.