A is true, the others are not. I would assume they count the mRNA and tRNA in protein synthesis as 'double stranded'
1. One reason is extinctions happen because of some kind of change in the environment where a life form lives. While some species can adapt to the changes, others die, and if enough die, the species becomes extinct. These are some of the biggest factors in the extinctions of particular species. 2. Contaminants in the environment, such as pesticides.
Answer:
Disruptive or Diversifying selection
Explanation:
occurs when natural selection favors both extremes of continuous variation. Over time, the two extreme variations will become more common and the intermediate states will be less common or lost.
Surface tension I think. which makes it feel like you are hitting concrete when you fall onto water from extreme heights.
Needle like leaves are protective by nature. They are protective to the branches because they deter animals from eating the leaves. This helps the plant/tree stay alive.
