<span>The answer is A. high pressure. The fusion of two deuterium nuclei can only be done with high temperature and also highpressure to prevent electrostatic repulsion of the proton. The successful combination of the deuterium then creates helium as it all combines.
Source: Objective Pre-Engineering Physics, Objective Questions with a Glossary of Knowledge wrote by Shobhana Sharma/ Google books </span>
What is the type of sunflower, and how fast does it use photosythesis?
Answer: Lettuce
Explanation:
Lettuce is a plant, therefore it makes its own food through photosynthesis. Since it does this, we call it a producer or an autotroph.
Answer: B
Explanation: Most mammals have only one pair of sex chromosomes in each cell. Males have only one Y chromosome and one X chromosome, while females have two X chromosomes. In Mammals, the Y chromosome contains a gene, SRY, which triggers embryonic development in a male.
Hope this helps!
