Oxygen is produced inside plants and other organisms breathe it in. explain why it is a problem when fish do not get enough oxygen. provide some details.

It can cause Hypoxia in fish and shorten the life expectancy of the babies. It also makes birth hard for fish, since the eggs often require oxygen.

answer; i believe that the correct answer is ; males are hemizygous for the x chromosome;

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.