Why can photosynthesis and cellular respiration be thought of as opposite processes?

Hybrid instruments that play sounds that are part sampled and part synthesized are known as:

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled

Each nephron is made up of capillaries that form the __ sweat glands bladder glomerulus ureter