Answer:
so the answer is c
Explanation:
A staircase is an example of the inclined plane simple machine. A spiral staircase, however, is categorized as a screw.
around 55 percent of the world's population is thought to be living in an urban area or city, with that figure set to rise to 68 percent over the coming decades, according to the UN.
आशा है कि मैंने मदद की
Structure and support ,storage area for the nutrients ,and also having a place where waste matter can decompose
Answer:
The correct option is D
Explanation:
A male sperm needs a x chromosome and y chromosome , whereas a female sperm needs 2 x chromosomes , Thus both genders needing x chromosome