Answer:
To reduce water loss.
Explanation:
Keeping the stomata closed during the day, helps reduce water loss when dry, hot wind blows across it.
Answer:
meiosis
Explanation:
Down syndrome is an abnormality that occurs on chromosomes 21, it occurs because chromosomes 21 cannot be separated in meiosis, the pair of chromosomes 21 do not separate and go together to one of the daughter cells. In this way, the oocyte or the resulting sperm will have 24 chromosomes instead of 23. When in conception that oocyte or sperm joins the germ cell of its partner that contributes the 23 chromosomes, the total sum of chromosomes that will have the first cell of the new conceived being will be 47.
Answer:
is required to do something
The continents of the Earth are constantly in motion . The reason for this motion is the position of the tectonic plates over the mantle of the Earth. The movement of these plates, causes the continents to move. Over the time, these movements becomes substantial and the drifting of the continents is visible. This leads to the formation of the new biomes. The flaura and fauna changes with these movements.
Hence, the correct answer is 'Option A - Biomes'.
