B. The number of chromosomes is reduced by one half.
It goes from 43 to 26 during the process of meiosis.
In a hypertonic solution, the solvent inside of the cell rushes out, causing the cell to shrivel and lose volume. In a hypotonic solution, the solvent rushes into the cell, causing it to expand and gain volume. This happens because of diffusion, which explains that molecules in the solvent will move from an area of high concentration to an area of low concentration.
I found the exercise on the internet and these were the options:
"A)Did this girl grow up in a single-parent mother-headed family?
B)Was this girl insecurely attached?
C)Did this girl have a stressful childhood?
D)<span>Does this girl have many siblings?"
Correct answer: D
The number of siblings is not a factor that promotes early puberty in girls. All the other factors do have an impact although the mechanisms are yet not very well known. When there is not a father figure present, girls tend to reach puberty earlier. When they are insecurely attached to their mother, girls also tend to reach puberty earlier. Lastly, another factor that may lead to an earlier puberty in girls is the stress they've passed through during childhood - mostly from family conflicts, whether with parents or siblings.</span>
<span>d. Not all rainforests are tropical rainforests.</span>
Not all rainforests are tropical rainforests because some are distinguishable from the others and these rainforests has its own designated climate that allows the specific species of plants to grow and thrive in that environment.
The more closely related the organisms, the more similar the bond structures. Many mammals , for example, have similar limb structures. The rabbit is similar to the human arm, with a large upper bone "arm" (the arm in humans) and a lower part of two bones, a larger bone on one side (the radius in humans) and a smaller bone on the other side (the ulna). These species also have a collection of smaller bones in the wrist area (called carpal bones in humans) that lead to the "fingers" or phalanges