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ladessa [460]
3 years ago
6

What is the thick, old crust of Earth known as?

Biology
2 answers:
yawa3891 [41]3 years ago
6 0
Lithosphere is the answer
Vikki [24]3 years ago
5 0
The answer is lithosphere.
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What electrons are used to form iconic and covalent bonds
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Answer:

Valence electrons, or the electrons that are farthest from the nucleus.

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Suppose that an adult black bear adds 50 pounds of fat in order to survive while hibernating through the winter. how much glycog
NemiM [27]

Answer: The correct answer would be 112.5 pounds

Explanation:

Let us first covert the pound into grams. We know that 1 pound is equal to 453.59 grams.

Thus, 50 pound of fat = 50 x 453.59 = 22,679.5 grams.

We know that, 1 gram of fat releases 9 Kcal of energy. Thus, total energy produced by 22679.5 grams = 9 x 22679.5 = 204,115.5 Kcal

Glycogen is carbohydrate thus, it will produce 4 Kcal of energy per gram.

Thus, 4 x C = 204,115.5 (where C is the grams of glycogen)

⇒ C = \frac{204115.5}{4}

⇒ C = 51,028.875 grams

Using 1 pound = 453.59 grams, we con convert 51,028.875 grams into pounds:

453.59 = 1

1 = \frac{1}{453.59}

51,028.875 = \frac{1}{453.59} x 51028.875

= 112.5 pounds

Thus, 112.5 pound of glycogen would be needed to produce the same amount of energy as produced by 50 pounds of fat.

8 0
3 years ago
An amoeba is a single-celled organism that feeds on algae, plants cells, bacteria. When an amoeba feeds, it first makes contacts
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The answer is; endocytosis

This is a form of active transport that enable cells to import large particles that cannot pass across the membrane. It is a bulk transport system.  The opposite of endocytosis s exocytosis where the cell expels large particles to the outside of the cell.  


3 0
3 years ago
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Water supplies are treated with chlorine to kill pathogens. chlorine reacts well with many other chemicals and bacterial cells b
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Answer:

Legionella tends to form biofilms and infect other microbial cells as intracellular pathogens.

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The Legionella genus of the bacteria is a group of gram-negative bacteria that can cause legionnaires disease.

The<em> Legionella pneumophila</em> is a species of this genus which can cause legion pneumonia. The bacteria lives in the freshwater and is resistant to chemical treatment like chlorine and the biocide treatment.

The reason for this resistance is since this species form a polysaccharide layer around the colony of the bacteria which is resistant to these treatments and also the bacteria prove parasitic to the protozoans which feed on these bacteria.

Thus, the selected option is the correct answer.

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(d) Most aphids do not have wings when they hatch. After sevezi generators, some as
Dima020 [189]

Answer:

The ability of flight allows them to migrate to different plants if needed. They can only leave a plant and walk away if there is a predator or if their food source's quality has deteriorated, otherwise they remain on their original host plant until then.

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