Answer:
<h2>C.</h2>
Explanation:
This theory tells us that all cells come from existing cells, means all living cells come from the division of pre-existing cells. They do no come spontaneously from non- living matter as early believed. All pre-existing cells divide to form new cells by mitosis or meiosis. New cells never come from non-living matter suddenly, they only come from cell only.
Most boreal forests are dominated by CONIFEROUS EVERGREEN TREES. The correct option is E. Boreal forests can be found in Canada, Russia and in Alaska in United states. Most trees in these forests are conifers with needle leaves and cones, examples include: black spruce, white spruce, balsam fir, jack pine, etc.
Answer:
keratinocytes
Explanation:
The skin contains various types of cells like melanocytes, keratinocytes and Langerhans cells. The Keratinocytes constitute about 90% of the human skin and are mostly present in the basal skin.
The keratinocytes produce keratin protein which protects the skin and some keratinocytes contain keratohyalin granules which are filled with cysteine-rich and histidine-rich proteins. The keratin and these granules make the skin waterproof.
Thus, keratinocytes are the correct answer.
Answer:
D)
Explanation:
If the explosion doesn't alter the Earth's rotation, the lack of moon would cause the Earth to rotate at a constant speed. This means that every day would be 24 hours long for the rest of the Earth's existence. The Earth's tides would also change because the gravity the moon exerts on the oceans would no longer exist.