Answer: nervous system
Explanation:
The nerves send impulses either from the brain or spinal chord for the body organs to coordinate
Answer:
Serotonin
Explanation:
Please mark me brainliest
Scientists use fossils to learn about organisms' lives and evolutionary relationships, to understand geological change, and even to locate fossil fuel reserves.
Answer:
Explanation:
So if there are lumen, there are class B skin. Therefore, with our connecting brain, we can infer that it's obvious what projection it makes. One like the monster effect, to us it is disturbed.
To summarize, they are packed tightly, within class B (known as dead-zone skin). In that, we have our shoebox. That shoebox tissue is known as shatire tissue.
Well, when chromosomes cross over during prophase 1 of meiosis, the homologous pair of chromosomes exchange segments of DNA which happen to be the genes. So the significance of crossing-over during prophase 1 is that it adds genetic variation to sexually reproducing organisms.