Pollution is always a good way to go but you don't have to do air pollution you can do water pollution or both air and water pollution.
B) the less porous, the less permeable
Porous means "full of holes."
Permeable means "stuff can go through it."
The more porous something is, the more permeable it is.
Answer:
Predators are an important part of a healthy ecosystem. Predators remove vulnerable prey, such as the old, injured, sick, or very young, leaving more food for the survival and success of healthy prey animals. Also, by controlling the size of prey populations, predators help slow down the spread of disease.
Heaps and heaps and heaps and heaps of them!
This is asexual reproduction and it shows offspring that have the same genes as the parent, since the genetic material was copied before the division.
