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Anna11 [10]
3 years ago
14

Which of the following is a compound machine?

Chemistry
1 answer:
Burka [1]3 years ago
3 0
A compound machine is that which is composed of two or more simple machines. Simple machines come in 6 basic types: (1) wheel and axle, (2) inclined plane, (3) wedge, (4) pulley, (5) screw, and (6) lever. Among the choices given above, the compound machine is the can opener for it is a combination of a wedge and a lever. 
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Many protists are single-celled organisms. Which of the following characteristics is also common to organisms in Kingdom Protist
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Protists belong to the group eukaryotes (having their DNA enclosed inside the nucleus). They are not plants, nimals or fungi but they act like one. They can be in general subgroups such as unicellular algae, protozoa and molds. They thrive in environments with little sunlight. The answer is letter B.

6 0
2 years ago
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Get it right :D if this is wrong or not correct ill give u a bad review And no brainiest
tangare [24]

Answer:

In short, because we are tearing up the oxygen factories to make way for carbon dioxide emitters. (Doesn't make a lot of sense, read the explanation)

Explanation:

So, 1000 years ago, we had a lot more trees, didn't have engines or cars or factories or anything, really that released carbon dioxide into the air and we had a lot more trees and since the invention of cars, engines, carbon dioxide-emitting tools and factories and all the other things that emit "Greenhouse gases" and in doing that, cleared more trees to make room for factories and roads and that has drastically changed the outlook of the carbon cycle.

4 0
3 years ago
How does prairie grasses protect soil
jeyben [28]

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But I think that the grass is there so that the dirt doesn't fly away.

4 0
2 years ago
Is atomic weight a whole number or not a whole number
steposvetlana [31]

Answer:

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Hope this helps! If so please mark brainliest and rate/heart if it did to help my account out!!

3 0
3 years ago
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Answer:At the molecular level, the pressure of a gas depends on the number of collisions its molecules have with the walls of the container. If the pressure on the piston is doubled, the volume of the gas decreases by one-half. The gas molecules, now confined in a smaller volume, collide with the walls of the container twice as often and their pressure once again equals that of the piston.

Explanation:

5 0
2 years ago
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