Answer:
1 and 4
Explanation:
Streams and small rivers flow together to create river systems. As the weather gets warmer, the snow and ice from the winter melts, which makes the water flow down the stream and into the larger river system. ... This can result in flooding due to more water draining in than being lost to evaporation.
Hey i think the answer is A
Sperm production is hormonally driven. Brain hormones govern sperm production and are precisely controlled. So I say yes
Phages are a positive use of viruses
