Viruses are parasitic, in that they require a host cell in order to go through the process of reproduction.
when the influenza virus attaches itself to its host, which type of viral reproduction takes place?

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

Explain light independent reactions