During the day in a greenhouse, it is warm and there is plenty of light, so the concentration of could be increased to boost the rate of photosynthesis. What two words complete the sentence

Which of the following claims does the author support the least

How many chromosomes are in a gold fish?

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important