Answer;
D. The birds have different mating seasons.
Explanation;
-Different species of birds have different mating or breeding seasons. Evolution has played a role in adjusting the timing of avian(birds) breeding seasons to maximize the number of young produced. The breeding season depends on a number of factors, for example In the temperate, subarctic, and arctic zones, the overriding factor is the availability of food. This varies across all different species of birds, irrespective of other similarities they may have.
A unique blue is a blue that has no "Red" or Green tint
Answer:
B or D
Explanation:
think of it how you use chalk on a chalk board, its less friction using chalk instead lets say a marker on a white board.
<span>D is the correct answer. Haploid cells only have one set of chromosomes. Meiosis results in duplication of cells with only one set of chromosomes in each - first chromosomes are copied, then DNA gets swapped, then the cells divide with one chromosome set in each of the four cells.</span>
Answer:
B
Explanation:
A zygote is the resulting cell from fertilization.
Fertilization occurs when the sperm (the male gamete/sex cell) fuses with the egg (the female gamete/sex cell). After they fuse, or fertilize, a cell forms that contains half of the DNA from the father (sperm) and the other half from the mother (egg). It has a complete set of DNA, and is considered a haploid cell.
It is not the structure that nourishes the fetus, an un-fertilized egg, or a ball of about 100 cells. Therefore, the correct answer is <u>B: a sperm fused with an egg.</u>
