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geniusboy [140]
3 years ago
9

Can someone please help me, I am a little stuck.

Biology
2 answers:
Naddik [55]3 years ago
6 0

Maybe it's Reptiles, marsupials, dogs, and cats if its asking for all og them after it ot just one its Reptiles

hope this helps

Eduardwww [97]3 years ago
5 0

Reptiles, marsupials, dogs, and cats. It goes from left to right, it has the common trait that is developed at the bottom of the diagram, so everything moving to the right is evolving with different traits.

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An electrocardiogram (ECG) provides information about: Group of answer choices the pressure of blood in the heart chambers the r
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Answer:

the rhythm of heart contractions.

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.

An electrocardiogram (ECG) provides information about the rhythm of heart contractions.

Additionally, 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.

4 0
2 years ago
In an experiment two potted plants, labeled Plant 1 and Plant 2, are placed in transparent plastic bags and left in the open. So
Sloan [31]

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Its D. role of carbon dioxide in photosynthesis.

Explanation:

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7 0
3 years ago
What do solid and hazardous wastes have in common?
jonny [76]

Answer:

Hazardous and solid wastes can be solid, liquid and gaseous form.

Explanation:

Hazardous wastes are wastes that are composed of harmful or toxic substances which is generated from industries, households, hospital e.t.c that are threat to humans and their environment.

Solid wastes are discharged or absconded materials such as refuse, sludge, gabbage, from water treatments, air pollution, household, industries e.t.c.

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What is the difference between plankton, nekton and benthos?
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<span>The common difference between the three organisms is the area in which they specifically live or stay in the ocean. Planktons can’t be seen by the naked eye and they require microscopes to be detected. Planktons usually float in the water and they cannot move on their own that’s why they are dependent in the movement of the water.

Nektons are organisms that swim through the water and they live in different depths in the ocean ecosystem. Nektons are composed of fish and other mammals that propel themselves through the water.

Benthos are organisms that live in the ocean floor and many of these organisms stay in one place by attaching themselves to rocks. This adaptation protects them from crashing waves and drastic water movements. Other benthos are known to burrow in the ocean floor either for food or protection.</span>
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3 years ago
40 pts plz help
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Answer:

Humans cannot occupy the lowest levels.

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