<span>Answer A is correct because humans release tons of chemicals into the environment every single day. All it takes to disrupt an entire ecosystem is a chemical released into their water source, which in time slowly poisons the animals. Say a rabbit was drinking the polluted water and is now carrying the poison in it's body. A coyote comes along and eats the poisoned rabbit, and the coyote is now poisoned. That threw off the natural food chain.</span>
Chromosome segregation
If the character is governed by a single allele and it is dominant, than its probability to be in the gamete is 75%.
<span>raising the pressure gradient between abdominal and thoracic veins during inspiration</span>
The two stages of photosynthesis: Photosynthesis takes place in two stages: light-dependent reactions and the Calvin cycle (light-independent reactions). Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH.
