It is harmful because it cannot carry us much oxygen. It is helpful because it limits the transmission and effects of malaria, which is common in Africa.
Inorganic elements that are extracted from the soil by plants and passed up the food chain are known a Minerals.
- Minerals are inorganic compounds that make up the majority of the soil solution; among those needed by plants for structure and control are nitrogen (N) and potassium (K).
- Plants nevertheless need inorganic salts, which they take up from the soil around their roots. These salts contain the elements phosphorus (in the form of phosphate), chlorine (as the chloride ion), potassium, sulphur, calcium, magnesium, iron, manganese, boron, copper, and zinc.
- Group of creatures arranged from producers to consumers in the food chain, as well as prey, predators, scavengers, and decomposers. food chain. noun. each connected food chain within an ecosystem. Likewise known as a feeding cycle.
To learn more about Minerals.
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Weathering is when rocks are broken into smaller pieces by wind, water, and plants. Erosion is when these broken pieces are moved by ice, wind, or water. so, the best I can think of is "Weather down, erode away."
The correct answer is A
The scientist can determine that this nucleic acid is a DNA molecule, because it contains Thymine, which does not occure in the RNA molecule. The RNA molecule contains Adenine, Guanine and Cytosine just like the DNA, but unlike the DNA it contains Uracil, not Thymine.
Secondly, the scientist can say with certainty that this DNA molecule is surrounded by a nucleus based on the structure of the nucleic acid described. Only eukaryotic cells have ladder structure. The prokaryotic cells have circular DNA and do not have any organelles, like the nucleus. Therefore, from the ladder structure of the DNA the scientist can see that the cell has a nucleus.