Gas exchange in humans is the delivery of oxygen lungs to the bloodstream, and the elimination of carbon dioxide from the bloodstream to the lungs.
<span>the virus injects the genetic info. this can be RNA or DNA. retroviruses inject RNA. after injection, the host cell transcription/translation machinery is hijacked and starts making virus proteins from the viral genes.</span>
A wolf is a tertiary consumer.
Answer: b. Light independent
Explanation: Photosynthesis is a process where carbohydrtes are formed with energy from the sunlight, in cianobacteria, algae and plants. This process has two steps:
- The first step are light dependent reactions where sunlight excites chlorophyll molecules and electrons are transport through photosystems. In this step, NADPH and oxygen are produced.
- The second step are light independent reactions called Calvin cycle, where CO2 is fixated to form carbohydrates using NADPH as energy source.
Almost everything imaginable pollutes the water, whether it be plastic cans or dumping beverages into the ocean