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romanna [79]
4 years ago
8

What do your veins do to keep your blood flowing in one direction?

Biology
1 answer:
yanalaym [24]4 years ago
6 0
What Re your answer choicemsns
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Explain the evolution of heart in vertebrates
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The evolution of the heart is based on the separation of oxygenated blood from deoxygenated blood for efficient oxygen transport. pisces have a dual chambered heartwhile reptiles and amphibians are having a three chambered finally aves and mammals have four chambered hearts.

Explanation:

please mark as brilliant answer

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What is blood consumption?​
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Blood is the most important byproduct of slaughtering. It consists predominantly of protein and water, and is sometimes called "liquid meat" because its composition is similar to that of lean meat. Blood collected hygienically can be used for human consumption, otherwise it is converted to blood meal.

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Which of the following materials is not part of every chemical reaction?
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Answer:

The correct answer is C. gases.

Chemical reaction is the process by which one or more substances are converted into different substance or substances.

The substances which undergo chemical reaction are called as reactants while the substances which are produced by the reaction are called as products. During chemical reaction, chemical bonds of substrates undergo breaking and formation process to form an entire new product which may have same or different physical and chemical properties as compared to substrates.

Energy is either used or released during the chemical reaction. When the energy is used, it is termed as endothermic reaction but when the energy is produced by the reaction, it is termed as exothermic reaction.

Lastly, gases may or may not participate in a chemical reaction.

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"Organisms in domain _____________ are more closely genetically related to organisms in domain ___________ than domain _________
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Answer: Organisms in domain Archaea are more closely genetically related to organisms in domain Eukarya than to domain Bacteria.

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3 years ago
Which correctly lists the three features of Earth that are the main types of landforms?
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c

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because it has all the types of features of earth

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