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777dan777 [17]
3 years ago
10

Can some one help me with this ASAP!

Biology
1 answer:
iragen [17]3 years ago
8 0
Density is mass divided by volume. The mass of the block is 10 grams. The volume of the block is 2 mL: the water changes from the 3 mL line to the 5 mL when the block is added, so the block must be 5-3= 2 mL.

So, the density is 10 g / 2 mL = 5 g/mL.

Hope this helps!
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The electrons for photosynthesis come from:
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Answer:

The energy comes from electrons produced by oxidation of biological molecules.

Explanation: In photosynthesis, the energy comes from the light of the sun.

Hope this helped! :)

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4 years ago
Pyramids depicting the number of organisms or biomass may be inverted, upright, or even diamond-shaped.
Delicious77 [7]

Answer:

The correct answer is - as energy lost at every trophic level.

Explanation:

In any ecological ecosystem the energy pyramids always upright unlike other pyramids such as biomass showing the number of organisms, that can be diamond shape, inverted or upright.

The main reason behind this is due to the fact that it is only a pyramid in the ecosystem that always unidirectional in the food chain which is always some energy lost with an increase in the trophic level in the food chain. This loss of energy always gets back to the atmosphere in each step of the food chain.

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3 years ago
ADVANTAGES OFCORONA VIRUS
RUDIKE [14]

Answer:

Coronavirus in its own doesn't have an advantage.

I believe that it helps us to prevent other epidemic diseases such as cholera and other diseases that are caused by lack of sanitization.

Since washing hands frequently is the way of preventing coronavirus.

And wearing mask also helps us to prevent other respiratory diseases being transmitted.

4 0
3 years ago
Describe Newton’s second law of motion. In your response, discuss how an object’s mass or the force that is exerted on the objec
Ann [662]

Answer:

Newton’s second law of motion is more quantitative and is used extensively to calculate what happens in situations involving a force. The greater the force that is applied to an object of a given mass, the more the object will accelerate.

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For example, doubling the force on the object doubles its acceleration.

Example 1: Pushing a bicycle or a Cadillac, or stopping them once moving. The more massive the object (more inertia) the harder it is to start or stop.

7 0
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What describes soil and temperature in an ecosystem
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abiotic factors.

An abiotic factor is a non-living part of an ecosystem that shapes its environment.

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