Which best explains how photosynthesis is to humans? it reduces the amount of harmful rays released by the sun. it increases the levels of carbon dioxide in the air. it provides oxygen for humans to breathe. it produces proteins, which humans can eat.

What claim did thorne make? what evidence supported his claim?

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

Some technological solutions to problems like global warming meet the specific needs and situations of local communities. an example from india involves converting the solid waste from cattle into clean-burning fuel for cooking. this reduces the amount of greenhouse gases, specifically methane and carbon dioxide, released into the environment from wood fires. when evaluating the feasibility of implementing this solution, computer models are used to weigh costs against benefits. what factor is least likely to impact the decision on adopting this technology?