What is the primary purpose of photosynthesis?

to capture light energy, convert some of it into chemical energy, and store it in the form of carbohydrates for other life forms to use
to capture light energy and release oxygen into the atmosphere, so that the level of oxygen in the atmosphere increases
to take up carbon dioxide from the atmosphere so that the level of carbon dioxide in the atmosphere is reduced

Which image shows labeled organelles that are present only in plant cells?

Briefly describe the scenario that was discussed in the behaving brain that demonstrated that the brain can change based on state or mood. which disease could the research involving rats and learning experiments that was discussed in the behaving brain ultimately with? in the behaving brain, what is a common misunderstanding about amnesia that was mentioned? what is the truth about amnesia that's mentioned? what does research discussed in the responsive brain show to be different in men and women's reaction to touch? what was discussed in the responsive brain as being brain-based and a vital part of normal growth and development in young children? in the responsive brain, what do they discuss as a possibility for leading to deficiencies in cognitive impairment as we age? in the responsive brain, what did the research involving african cichlid fish demonstrate? briefly describe the back story and affliction of the author of peter pan. what did you find most interesting about the behaving brain video, and why? what did you find most interesting about the responsive brain video, and w

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