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aleksklad [387]
3 years ago
12

What happens if an atom gains 2 electrons to fill its valence shell

Biology
1 answer:
lesya [120]3 years ago
4 0
B. It becomes more stable and will have a  -2 charge.
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Describe how photosynthesis and cellular Respiration Power all the ecosystems on this planet
SSSSS [86.1K]

Answer:

Photosynthesis and cellular respiration allow the carbon and oxygen that organisms consume and produce to be cycled through the ecosystem. They work together so that what is made from one process is used in the other. Without them the ecosystem would run out of carbon dioxide and oxygen, and everything would die.

4 0
3 years ago
Refer to the invertebrate cladogram above to answer the following questions.
Alex787 [66]
1. Multicellular
2. Multicellular, tissues, bilateral symmetry, body cavity, coelom, segmentation, jointed appendages, exoskeleton
3. Annelids 
4.Jointed appendages, exoskeleton
5. Evolutionary phylogeny is unknown, but it is known to have some of these adaptive traits (multicellular, tissues, bilateral sym, body cavities, coelom)
6.sponges, jellyfish, roundworms, snails
3 0
3 years ago
Read 2 more answers
In mosses gametes are produced by _____; in ferns gametes are produced by _____. In mosses gametes are produced by _____; in fer
Aneli [31]

Answer:

In mosses gamete are produced by MITOSIS; In ferns gametes are produced by MITOSIS.

Explanation:

Ferns usually grow way bigger than mosses and they are both primitive plants. In ferns the gametes, sperm and eggs are formed by mitosis when there is a suitable place for development.

6 0
3 years ago
In the scientific method, the hypothesis comes after the
Nonamiya [84]
Answer: Purpose

Explanation: If you have no purpose or inclination to have a hypothesis, you wouldn't have a hypothesis in the first place. Plus, it can't be experiment because there isn't anything to experiment without a hypothesis. The analysis is, well analyzing your data to see if your hypothesis is realistic. Definitely, not conclusion. <span />
5 0
3 years ago
Differentiate the pH conditions of the stomach and intestine and how does it help in the digestion of food.
babunello [35]

Answer:

pH of stomach is more acidic ranging from 1.5 to 3.5 meanwhile intestine is more on the neutral side ranging from 6 to 7.4

Explanation:

as far as it is concerned about digestion relation between the two stomach and intestine is  that stomach has more acidic pH because most of the the digestion occurs in stomach. the more acidic ,the more quickly food will be broken down to essentials .like an upset stomach as it overdoes the digestion as for the intestine it is mainly responsible for absorption of already digested food..

7 0
3 years ago
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