Plants such as epiphytes or orchids have aerial roots. Epiphyte plants grow on other plants without harming them. Aerial roots of orchids are needed for physical support: to climb other plants and compete for sunlight.
1) those who survive will have a certain allele which gives them a phenotype allowing them to have a physical advantage. for example, a giraffe may have an allele giving it a longer neck so it can reach more leaves. This allele is inherited by the offspring
The star turns matter into energy is the process of nuclear fusion. Nuclear fusion is a process where two or more atomic nuclei fuse to make a single denser, or larger nucleus.
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