B: <span> By preventing sperm from entering into semen</span>
16 because the 8 copy themselves and split this creating 16 chromosomes
Explanation:
leukocyte cells as neutrophils has the property of phagocytosis. and lymphocytes cells such as B & T lymphocytes in which b-lymphocytes produces antibodies against particular antigen and T Lymphocytes destroy infected cells.
Answer: Option A and E.
Explanation:
Norther hemisphere Is the half of the Earth that lies on the north of the equator. The equator is the line that divide the Earth into two halves.
During the winter, the northern hemisphere is colder because the northern hemisphere move away from the sun and receive less sunlight form the sun. The sun is very high in temperature and it has high heat, when the northern hemisphere move away from it, there is lower heat or temperature that get to it , making it to become cooler or have lower temperature. The countries in the northern hemisphere comprises of all countries in Europe, North America, Asia,part of South America and little part of Africa.
Its poisonous biotic factor because they are real diseases we consume and they interact with us almost everyday