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2 years ago

How many valves are in the chambers of the heart?

2 answers:

8 0

Four valves

Heart Valves. The heart has four valves - one for each chamber of the heart. The valves keep blood moving through the heart in the right direction. The mitral valve and tricuspid valve are located between the atria (upper heart chambers) and the ventricles (lower heart chambers).

jeka57 [31]2 years ago

4 0

Answer:

$four \: valves$

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The tree in your backyard is home to two cardinals, a colony of ants, a wasp's nest, two squirrels, and millions of bacteria. To

telo118 [61]

Answer:

A community

Explanation:

In ecology, a community is used to describe a group of organisms of different species populations that live and interact together at a particular time in a common habitat or ecosystem.

The two cardinals, colony of ants, a wasp’s nest, two squirrels, and the millions of bacteria represent a community of different organisms dwelling at the backyard tree.

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2 years ago

17. A place where two tectonic plates collide is called a ______ boundary and is often associated with _____ faults.

NNADVOKAT [17]

Convergent is the first blank i don’t know the second i’m sorry.

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2 years ago

An engineer is building a new steel skyscraper in a area with a lot of Earthquakes, Compare two systems (fixed based system and

Leokris [45]

Answer:

<h2>Base isolated system</h2>

Explanation:

Fixed based system:-

A fixed-base building (built directly on the ground) will move with an earthquake’s motion and can sustain extensive damage as a result.

Base isolated system:-

A base isolation system is a method of seismic protection where the structure (superstructure) is separated from the base (foundation or substructure).

Hence,

A base isolated system is much more better in a area where there are a lot of earthquakes. 

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2 years ago

Your ability to feel the physical enjoyment of a hot bath is most likely to be stopped by injury to your: angular gyrus hippocam

Sholpan [36]

Answer:

hippocampus

Explanation:

the hippocampus could be the likely part of the brain that is affected

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3 years ago

It has been observed that certain species of insects which had not previously caused significant harm have become serious pests.

bulgar [2K]

What do you mean It has been observed that certain species of insects which had not previously caused significant harm have become serious pests. the best explanation for this phenomenon is that the pesticide killed off predators which had previously held this species in check. a mutation occurred in the species. the pesticide increased the vigor of the species. was able to be used by the pest as an additional food source is also a reproductive for some insect species.

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2 years ago