Answer:
As gametes are produced, the number of chromosomes must be reduced by half. Why? The zygote must contain genetic information from the mother and from the father, so the gametes must contain half of the chromosomes found in normal body cells.
Explanation:
Answer:
Explanation:
a. There are gain to reproduce, if increase the number of seals, it's will increase the number of whales, because they eats the seals and become strongest to reproduce. If the seal’s birth rate goes up, the whales will benefit more. If the whale’s death rate increases, the seal’s will benefit more than the whales.
b. The more the whales capture, the fewer seals there will be. Over time, this will negatively affect both the seals and the whales.
c. Limiting on the size of population, such as temperature, light and soil. (abiotic factors), or biotic factors, such as competition, predation, availability of food, or ability to survive.
Answer:
Easy access to medical care is not a reason for high birth and death rates in developing countries.
Explanation:
A big portion of the developing countries tends to have high birthrates and high death rates. The reason for this are numerous, ranging from political, religious, traditional, economic, low education levels, women being discriminated against, etc. In general, it seems that the lower the status of women is in a society, the higher the birthrates are, and all of the factors that contribute to it actually result in a shorter life span for the whole population.
One thing that doesn't contribute to this is easy access to medical care. Easy access to medical care is not something that is found in a developing country, on contrary, the access to medical care is hard, limited, and for many people out of reach. When medical care is not available for the population the results are always devastating, with high death rates among infants, during birth (both mothers and children), diseases spread very easily and have a much bigger impact, and because of lack of it also the population leaves shorter lives.