The dendrites are covered with synapses formed by the ends of axons from other neurons. ... When neurons receive or send messages, they transmit electrical impulses along their axons, which can range in length from a tiny fraction of an inch (or centimeter) to three feet (about one meter) or more.
I think option a is the correct answer
Answer:
The process responsible for producing most of the Earth's oxygen is known as photosynthesis
Explanation:
In this process, plants and certain other organisms convert sunlight into oxygen and other products.
Enzymes split the DNA molecule into two rails and then transport corresponding nitrogen bases to each rail. I think this is the answer
A rift valley is a deep valley on the land that forms a divergent boundary.