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Ne4ueva [31]
3 years ago
5

What causes a heart attack?

Biology
1 answer:
KIM [24]3 years ago
5 0

Answer: A. A blockage in the aorta

Explanation:

A heart attack happens when one or more aorta or coronary arteries get blocked. With the passage of time, the coronary artery becomes narrow that is because of the deposition of various substances such as fat, cholesterol and other reserves. This restricts the smooth circulation of blood hence results in heart attack or heart stroke.

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4 years ago
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mafiozo [28]
I think the veins absorb the photons because they're located at the top part of a leaf while the stomata that serves as the leaf's lungs are found at the under side.
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3 years ago
If you didn't have macrophages in your body then,
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<span>You wouldn't be able to defend against germs</span>
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3 years ago
O QUE É UM CLONE? EXPLIQUE COMO OCORRE A CLONAGEM EM MAMÍFEROS.
Pavlova-9 [17]

Answer:

A clonagem é a obtenção de duas células idênticas com o mesmo código genético que o produto da reprodução assexuada.

Nos mamíferos, a clonagem ocorre através de células somáticas, onde há um núcleo doador e um oócito que se unem por meio de um choque elétrico, formando o embrião que resultará em um ser vivo clonado, um exemplo de essa era Dolly, a ovelha.

Explanation:

Na clonagem de mamíferos, o embrião é responsável por ter caracteres da ovelha doadora, ou seja, será a imitação do código genético desse animal que empresta a célula doadora ao úbere.

3 0
3 years ago
Which of the following is a TRUE statement about photosynthesis?
harina [27]

Answer:

A

Explanation:

photosynthesis converts light energy to chemical energy and not the other way round

product of photosynthesis is oxygen and energy

photosynthesis cannot occur is light energy is not available

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3 years ago
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