Which of the following best describes how animals and plants react to the spread of disease in a certain environment? 1. The number of predators increases.
2. The number of prey increases.
3. They may struggle to survive.
4. They move to new locations.

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

Ricardo notices that when he plays soccer in the rain, his ball does not seem to go as far after a kick. what is the best scientific question that ricardo could ask about this observation? is soccer better played in the rain or sun? how does rain affect the distance a soccer ball can travel? how does rain affect the speed of a soccer ball? is soccer affected by the rain?

Which blood cell spend most of their time in the lymphatic system?