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Margarita [4]
3 years ago
13

Why do cats lick their owners? (Pls tell me... my cat keeps licking my face and I feel weird cus IDK What in the world he's doin

g)
Biology
1 answer:
zzz [600]3 years ago
8 0

Answer:

its a sign of affection

Explanation:

your cat may lick u as a way to create a social bond, and another reason is because your cat might be stressed or Anxious

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Two students are working together on an experiment that measures the effect of different liquid fertilizers on the thickness of
Georgia [21]

The correct answer is option (C) One student measures liquids for the experiment by holding the flask up at eye level. The other student measures liquids for the experiment while the flask sits on the table. Measuring liquids by holding the flask at eye level is the greatest amount of error in the experiment.

When liquid is being measured in a flask, the liquid shows a curve downwards which is called the meniscus. For measuring the transparent liquids, the lower meniscus touching the graduation of the should be considered and for measuring the colored liquids, the upper meniscus touching the graduation of the flask should be considered. When, the measurement is done by holding the flask at eye level there is always an error as it should be kept on a flat surface and measured by eyes directly leveling with the liquid. This gives a correct measurement which was done by the other student. Thus, one student measuring the liquid by holding the flask at eye level will have a wrong measurement and the other student measuring the liquid while the flask sits on the table gives the correct measurement and the results of the experiment will vary.


3 0
3 years ago
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If the producers in this aquatic food chain produce 50,000kcal of energy; how much energy would the Perch have?
Snezhnost [94]

Answer:

The 10% Energy Rule in a Food Chain

4 0
3 years ago
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Which of the following is true of the blood-brain barrier? a. The barrier is formed by cells that line the capillaries of the br
grin007 [14]

Answer:

The barrier functions to regulate the chemical composition of the extracellular fluid surrounding the brain cells.

Explanation:

Blood-brain barrier

It is a very selective semipermeable membrane , hence allow some specific substance to pass via it . This barrier separates the  extracellular fluid in the central nervous system  and the circulating blood from the brain .

<u>The barrier is composed of the endothelial cells .</u>

Passive diffusion is shown in this system , and allows molecules like the water , glucose , amino acid to pass .

It regulates the chemical composition of the fluid of brain cell .

6 0
3 years ago
Hen there is a cut in the skin and bacteria enter the body, the immune system responds. First, macrophages approach the area of
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Correct answer: B). The phagocytotic barrier, which is a part of innate immunity

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It is a mechanism which is used by the immune system to kill and processing of antigen that play an important role in innate immune response.

Hence, the correct answer would be option B.

4 0
4 years ago
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I need help with this question plzzz
Dafna11 [192]
I would think it would be C
5 0
3 years ago
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