Answer:
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Explanation:
In general, photosynthesis in cyanobacteria uses water as an electron donor and produces oxygen as a byproduct, though some may also use hydrogen sulfide a process which occurs among other photosynthetic bacteria such as the purple sulfur bacteria. Carbon dioxide is reduced to form carbohydrates via the Calvin cycle.
Yes. modern humans are still subjected to the process of natural selection. although natural selection is less extreme than it used to be, it still has an impact on humans. many people die due to diseases, such as the flu or other illnesses. those with stronger immune systems are able to fight off these diseases and survive, while those with weaker immune systems may die from these diseases.
Surface waves are the slowest of all seismic waves. They travel at 2.5 km (1.5 miles) per second. There are two types of surface waves. Love waves move side-to-side, much like a snake.
