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3 years ago

Are humans doing anything to help reverse the levels of co2 from construction

1 answer:

3 0

Yes people are trying to plant more trees and promote awareness on afforestation and some have even started making rules the 'clean air act'

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Integrated Science Respiration and Air pollution any one, atleast 1

ANTONII [103]

Answer:

Number 4 here.click on the picture

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3 years ago

Words to Know Write the letter of the definition next to the matching word as you work through the lesson. You may use the gloss

ikadub [295]

Answer:

Statement A - cellular membrane

Statement B - eukaryote

Statement C - spore

Statement D - prokaryote

Explanation:

The cell membrane is a protective layer present around the cell and cell organelle that regulates and allows different molecules to enter and exit to regulate homeostasis.

Eukaryotes are the organism that can be unicellular or multicellular with the cells contain a nucleus in it.

Spores are reproductive cells that has a resistant layer that protects the cell from an unfavorable condition and capable to form an adult.

An organism that is unicellular and lacks the nucleus is known as a prokaryote and bacteria is an example of such organisms.

5 0

3 years ago

Which of the following cause the ventricles to contract?

vovikov84 [41]

Answer:

D. All of the above

Explanation:

In Human anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.

Generally, the cardiac cycle occurs in two (2) stages;

1. Diastole : in this stage, the ventricles is relaxed and would be filled with blood.

2. Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.

Cardiac output can be defined as the volume of blood that is being pumped by the mammalian heart through the left and right ventricle per unit time (minute).

The following conducting systems of the heart cause the ventricles to contract;

I. Atrioventricular (AV) node: it's a component of the electrical conduction system of the mammalian heart located in the Koch triangle which connect the ventricles and atria electrically.

II. Atrioventricular (AV) bundle: it's a specialized tissue that transmits electrical impulse from the atrioventricular (AV) node to the Purkinje fibres of the ventricles.

III. Purkinje fibers: it's a network of specialized cells that comprises of glycogen and they transmit cardiac action potentials in a rapid manner from the atrioventricular (AV) bundle to the myocardium of the ventricles.

Furthermore, the right atrioventricular valve (AV) also referred to as the tricuspid valve is located on the right dorsal side of the human heart. The right atrioventricular valve (AV) comprises of three (3) leaflets (flaps) which opens and closes in order to allow for the flow of blood from the right atrium of the human heart to the right ventricle. Also, the right atrioventricular valve is saddled with the responsibility of preventing blood from flowing backward in the mammalian heart.

6 0

3 years ago

Where did the catawba indians live?

NeX [460]

Answer:

C: piedmont

Explanation:

Catawbas tribe lived in the Carolina Piedmont

5 0

3 years ago

Question 1

inna [77]

Answer:

answers are:

<h2>ANSWER 1. TRUE</h2><h2>ANSWER 2. FALSE </h2>

PLS FOLLOW ME.....

AND ALSO MARK AS BRAINLIST 

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3 years ago