Answers by Von968188852

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When the ventricles begin to contract, pressure within the ventricles rises and blood flows toward the area of lowest pressure, which is initially in the atria. this backflow causes the cusps of the tricuspid and mitral (bicuspid) valves to close. these valves are tied down to the papillary muscles by these?

answered Jan 8 in Science

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When carbon atoms are not bonded to as many hydrogen atoms as possible, what kind of hydrocarbon results?

answered Jan 8 in Science

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When a sperm penetrates the egg, it triggers the egg to complete what?

answered Jan 8 in Science

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What is a disease that can be spread from animals to humans called?

answered Jan 6 in Science

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The appendicular skeleton is made up of all bones of the upper and lower what?

answered Dec 31, 2024 in Science

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Respiration cycles the organic carbon into which gas?

answered Dec 31, 2024 in Science

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Net production efficiency allows ecologists to quantify how efficiently organisms of a particular what incorporate the energy they receive into biomass?

answered Dec 31, 2024 in Science

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Earth is the only planet in the solar system that has what element, which is essential for human life, present in all three of its states?

answered Dec 30, 2024 in Science

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Because dizygotic twins develop from two eggs fertilized by two sperm, they are no more identical than siblings born at what?

answered Dec 30, 2024 in Science

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What is the term for the most abundant species in a community, characterized by high competitive abilities?

answered Dec 27, 2024 in Science

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