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
B. It's less dense. Ice floats<span> because it is about 9% less dense than liquid water.</span>
I believe the answer is c
D. Ecosystems are important in maintaining the good chain among all the organisms within it, which contributes to a high value of biodiversity
The answer u r looking for is-Hypothesis. Hope I’ve helped ;)
