Answer:
a thick, mucous secretion and active mitosis of epithelial cells
Explanation:
The mucous neck cells of gastric glands serve to secrete mucus. Mucus is a thick sticky secretion that is rich in protein and carbohydrates. Apart from lubricating the stomach lining, its layer serves to protect the cells of the stomach lining from HCl.
To maintain the integrity of the stomach lining, the wore out cells are replaced by the new cells. To serve the purpose, the epithelial cells of stomach lining undergo mitosis and produce new cells to replace the damaged cells.
Atmosphere, and active volcanoes, such characteristics is shared by mars and earth.
<h3>How do both mars and earth share characterstics?</h3>
- Both the planets have the same area of dry land. This is because two-thirds of the area of Earth's surface is covered with oceans but water is absent on Mars.
- Both Mars and Earth exhibit temperature and atmosphere.
- The geological processes on Mars and Earth are common for example formation of volcanoes, canyons and impact basins.
- Mars exhibits rings but the earth does not.
- Earth exhibit distinct seasons but Mars do not due to reducing and hot atmospheric condition.
Thus, these are the similarity between mars and earth.
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Answer:
Option D, the "biological ladder"
Explanation:
The food chain is the network of organism in which all are dependent on each other for their food, energy source and survival.
The circle of life depicts the time frame starting from origin of a life form till its death and the intermediate stages.
The tree of life basically determines which organism has evolved from which other organisms.
The biological ladder represents the development of species from simple form to a much complex form.
Hence, option D is the right metaphor
The giant impact theory — the idea that a catastrophic collision about 4.5 billion years ago between Earth and a protoplanet about half Earth's size created a disk of molten rock, gas and debris that consolidated to form the moon — was first set forth in the mid-1970s.
Answer: If you were solving for carrying capacity then the answer is 6.
Explanation: 450 divided by 7= 6.