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Soloha48 [4]
4 years ago
14

Students can use _________ to distinguish pure substances, such as elements and compounds with a constant composition, from othe

r substances. A) color B) density C) particle size D) state of matter
Biology
2 answers:
Oksanka [162]4 years ago
5 0
C) Particle size is correct
Nady [450]4 years ago
5 0

the answer is density


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An ecosystem with great biological
kow [346]

Answer:

H and J

Explanation:

F With great diversity comes and increase in species

G with an increase of animals there is an increase in competition  not a decrease

H and J both seem right since the more animals the more competitive it is for space and food

3 0
3 years ago
Design a controlled experiment to determine whether earthworms change the forest ecosystem.
Orlov [11]

"The experimental hypothesis may be that if Asian worms are introduced into a <u>deciduous forest</u>, the soil's nutritional composition will alter. The control group would consist of a region of the forest that has been worm-free in some way. But in order to serve as a control, this forest would experience the same amount of sunshine, heat, and precipitation. In order to determine if Asian worms actually have an impact on the forest ecology, the scientists could then analyze the amounts of nitrogen, phosphorus, and sulfur in the two portions of the forest."

Deciduous forest- A deciduous forest is one that is mostly made up of trees that shed their leaves in the fall.

To know more about the forest ecosystem, click on the below link,

brainly.com/question/24258058

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6 0
1 year ago
What is a waste product of photosynthesis that organisms need for cellular respiration
Aloiza [94]

Answer:

Oxygen

Explanation:

A waste product of photosynthesis organisms need for cellular respiration is oxygen. We breathe out carbon dioxide and plants use carbon dioxide during photosynthesis and in return they give us oxygen which is their waste product.

8 0
3 years ago
How does inorganic nitrogen from the atmosphere<br> (N2) get into living systems?
lawyer [7]

Answer:

When an organism excretes or dies, nitrogen is in the form of organic nitrogen in its tissues (e.g. amino acids, DNA). During the ammonification process, many fungi and prokaryotes then break the tissue down and release inorganic Nitrogen into the atmosphere as ammonia.

Explanation:

Plants use their roots for nitrogen compounds. When they consume the seeds, animals acquire certain chemicals. When plants and livestock die, or animals excrete waste, the organic nitrogen compounds return to the soil, where microorganisms known as decomposers break down their compounds.

6 0
3 years ago
How does having one sickle cell gene usually affect a person?
kumpel [21]

Answer:

A person who receives a gene for sickle cell disease from one parent and a normal gene from the other has a condition called "sickle cell trait." Sickle cell trait produces no symptoms or problems for most people. Sickle cell disease can neither be contracted nor passed on to another person.

5 0
3 years ago
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