3 years ago

The cardiovascular system is composed of which of the following?

Biology

1 answer:

Darina [25.2K]3 years ago

6 0

heart, arteries, and veins

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3. What is the original source of energy for all fossil fuels?

Rina8888 [55]

Answer:

the sun

Explanation:

All the energy in oil, gas, and coal originally came from the sun, captured through photosynthesis. In the same way that we burn wood to release energy that trees capture from the sun, we burn fossil fuels to release the energy that ancient plants captured from the sun.

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3 years ago

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While caring for an infant receiving vitamin supplements, the nurse observes symptoms of exophthalmos in the infant. what is the

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Which of the following is an example of polygenic (quantitative) inheritance? a. the ABO blood groups b. Huntington's disease

ra1l [238]

Answer:Human height

Explanation:

Inheritance patterns are often more complex than predicted by simple mendalian genetics. When Mendel studied some phenotypic characters, like the human skin color and height, they were found to be an addictive effect of two or more genes on a single phenotypic character. These are called quantitative characters, which usually indicates polygenic inheritance.

The human height is an example of quantitative character, it is controlled by at least 3 genes having 6 alleles. 3 genes with 6 alleles from both parent can give rise to wide range of phenotypic character (heights).