Which statement best describes what a thylakoid does during photosynthesis?
a. surrounds the grana and keeps them moist
b. enables the light-dependent reactions to occur
c. combines carbon dioxide and water to make sugar
d. the light-independent reactions to occur

Look at the following answer choices and determine which belongs in the both category. testable, can be disproven explains natural phenomena, has evidence to support it prediction, tentative, one or more scientists working together well established, many different scientists working independently, highly reliable

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

Aperson with age is more likely to catch diseases that healthy people usually don’t catch. what are these infections called?