Increasing carbon dioxide
concentration
increases the
rate of
photosynthesis
as carbon
dioxide (CO2) is
a
in
photosynthesis.
Above a certain
concentration,
further
increases in
concentration
do not increase
the rate of
photosynthesis
and it stops
being a limiting
factor.

Increasing  carbon dioxide  concentration  increases the  rate of  photosynthesis  as carbon  dioxide (CO2) is a limiting factor.

Explanation:

The photosynthetic rate is affected by certain factors, these can end up minimizing the potential amount of carbohydrate made by photosynthesis. For this type of biosynthesis, carbon dioxide is essential: it provides the inorganic carbon that is incorporated into carbohydrate molecules.

A decrease in the concentration of the available carbon dioxide may slow the photosynthetic rate.

The correct answer is c

The return of the wolf to yellowstone national park will probably affect the bird population to some degree, not significantly. while wolves will hunt birds when necessary, they prefer to hunt larger prey. the bird population will most likely only be affected when hunting is scarce for the wolves. birds of prey will also probably not be affected as much as other birds who spend more time on the ground hunting for food as the tend to spend more time in the air or in trees since they do not need to stay on the ground for long due to the nature of the way they hunt.