All heterotrophic bacteria eat organic nitrogen and release ammonia as a byproduct. This process is called (there are two terms for this, either one is correct).

Which phrase best describes surface currents? 1. up-and-down ocean movement caused by wind 2. waves that hit the shore at an angle and transport sand 3. streams of warm water flowing through the ocean and caused by wind 4. waves that approach the shore and cause their crests to fall into their troughs

Which of the following systems in absorbing oxygen and releases carbon dioxide

Parasitism could be considered a form of which of these types of relationships? -mutualism -commensalism -predator-prey -mimicry