What type of molecule serves as the inorganic carbon reservoir for photsynthesis

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Which of the following words best matches this definition: the process in which the best adapted organisms survive and pass on their traits, while those that are not well adapted do not survive to pass on their traits. question 3 options: acquired selection natural selection artificial selection organic selection

Substances that can pass through cell membranes by diffusion include a. na ions. b. proteins c. glucose. d. oxygen.