-Viruses can't reproduce by themselves. They require a host animal to do so.
-Viruses are not made of cells
-They can't keep themselves in a stable state (regulate temperature)
-They don't grow
-They can't make their own energy
Hope this helps :)
Explanation:
Keystone species are animals that help manage other animal species by controlling population numbers and biodiversity within an ecosystem. The impacts of keystone species are usually greater than their numbers.
owls can be a great benefit to places where rodent populations are high. Dense urban areas often suffer from an abundance of rats and mice spreading disease, and rural agricultural communities have their crops consumed and soil eroded from burrowing voles and field mice. Without owls, and other top predators, rodent populations could explode and exacerbate the effects they produce.
Answer:
Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar, which cellular respiration converts into ATP, the "fuel" used by all living things.
Answer:
A scientific theory.
Theories are never set in stone, but are widely accepted and have evidence to support them.