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ivanzaharov [21]
3 years ago
9

I know it a bit of questions but i will give you 15 points and branlyest plzzzzzz oh this for sience and DO NOT SEAL MY POINTS t

hx
1) % of the cells of most living things are made of water.
2) All organisms need a to live.
3) Organisms living on get oxygen from the air.
4) Organisms living in get oxygen from the water.
5) Green plants, algae and some bacteria need both and carbon dioxide.
6) eat other organisms to get food.
Chemistry
2 answers:
maw [93]3 years ago
8 0

Answer:

70%

air water and food

carbon dioxide

oxygen

a green pigment

heterotroph

Explanation:

sorry if its wrong i used my best of knowledge i didnt rlly understand most of it

noname [10]3 years ago
4 0

Answer:

1) 70% or more

2) Air

3) True

4) False

5) Sunlight

6) Heterotroph

Explanation:

Hope it helps!

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An exothermic reaction releases heat. An endothermic reaction absorbs heat. Burning gas releases heat so it would be exothermic. Acid and water react heating the beaker would be exothermic because it releases heat from the reaction. Hope this helps! ;)
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What volume will 0.875 moles of Kr occupy at STP
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6 0
3 years ago
What is the balanced form of the chemical equation shown below?<br> N2(g) + H2(g) → NH3(g)<br> -
Rom4ik [11]
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6 0
2 years ago
What is technology?
ella [17]

Something created for using science for use by society. Hence, option A is correct.

<h3>What is science?</h3>

Science is the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence.

Technology is the use of science to provide human problem. It can be in the form of a machine, tool or equipment. As long as it involves applying a scientific process, it's technology.

Example of technology is a computer. It's used to store and process data in a faster way. Old technology also included Hammer, Saw, Grinding Machines etc.

Hence, option A is correct.

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6 0
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weeeeeb [17]

Salt dissolved in water is a solution, therefore

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  2. the ratio of salt to water may vary
  3. salt and water retain their own chemical properties

<u>Explanation:</u>

Salt (sodium chloride) is formed from positive sodium ions bonded to negative chloride ions. Water can dissolve salt because the positive part of water particles attracts the negative chloride ions of salt. The water particle effects to be charged negatively near the atom of oxygen and positively near the atom of hydrogen.

Since contrasts attract, the water molecules tend to join collectively like magnets. Water is called the universal solvent since it can solve more substances than any other liquid. The salt and water retain their unique chemical properties.

3 0
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