<span>The chromosomes are lined up on the cell's equator during the Metaphase stage of mitosis. Almost immediately upon the cells lining up, the Anaphase stage begins, anaphase can be described as a migration of the two chromatids of each chromosome to the opposite spindle poles as they are pulled apart by the mitotic apparatus.</span>
Explanation:
Glial cells are the cells present in both the type of nervous system in which they neither conduct electrical impulse nor generate them but they perform some other functions like support.
Astrocytes are one of the type of glial cells which are present in the central system of neurons that is in the spinal cord and the brain.
These astrocytes perform various other functions like
1. Form the blood-brain barrier as they enclose the blood capillaries in the brain preventing leakage.
2. They regulate ionic concentration around the neurons.
3. They can store and produce glucose from the non-carbohydrate source.
4. They control the flow of the blood in the brain
5. They can also play a role in the formation of synapses in the neurons.
Vitamin D, helps build bones and keep bones strong and healthy.
Answer: D
Explanation: it’s the size of the sediments
Answer:
1. Index
2. isotopes
3. epoch
4. An index fossil is known from a specific time period, is prevalent, and has had many fossils formed. This allows for recognition of similar time periods in different geographic locations.
5. The geologic time periods from smallest to largest are epoch, period, era, and eon. This organization is important because it allows us to describe and classify the evolution of living things on Earth.
6. Human beings evolved during the Cenozoic era.
7. The oldest fossils are estimated to be 3.5 billion years old.
8. Relative dating compares the ages of fossils and rocks relative to one another in a specific area to determine which are older and which are younger. Absolute dating applies a specific time period or age to the fossils and rocks.
Explanation:
Penn Foster