BIOLOGY MIDDLE SCHOOL

Identify the element that humans need to breathe.
Identify the element that humans need to breathe. - 1

Answers

Answer 1
Answer:

Answer:

top right

Explanation:

i took it
Answer 2
Answer:

Answer:

The one on the top right

Explanation:

i took the test hope this helps

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Which of the following is an example of a natural source of air pollution? A. Mining releases gases trapped beneath Earth's surface. B. Burning coal and natural gas releases carbon dioxide. C. Erupting volcanoes release many toxic gases. D. Plowing and harvesting crops releases dust particles.

Answers

The correct answer is (C) Erupting volcanoes release many toxic gases.

Air pollutants are gases that harms the environment and human health. Some air pollutants come from volcanic eruption are toxic( like sulphuric acid) and harm our health. Volcanic eruption produce soot and ash into the atmosphere , which reduces sunlight and lowers temperatures. Eruption also produce carbon dioxide, carbon monoxide and other polluting gases

Some other examples of natural air pollutants are:

1. Radon is a radioactive gas that seeps from the ground in some areas, and fog and mist are both dense water vapor at ground level that obscures vision. 2. Ozone, a chemical formed naturally by the action of sunlight on oxygen, is a pollutant at ground level but beneficial in the upper atmosphere. It damages plants and causes breathing problem in the lower atmosphere.


C.erupting volcanoes release many toxic gasses.

Why are the cells produced by meiosis considered gametes?Can someone answer today it would mean a lot.

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gametes are cells used to sexual reproduction. they are haploids and that means they have just one set of chromosomes (most of the cells of our body have 2 sets). that kind of cells is produced mainly by meiotic division of the gamete's stem cell (called oogonium or spermatogonium) and that's why meiosis usually leads to the production of gametes. gametes are haploids so that they could combine (egg with sperm cell) and create the whole new organism (adult organism is almost always diploid).

A family noticed that the decorative rocks supporting their patio have begun to turn red. What has most likely led to this discoloration and why is this a problem?

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Answer:

Explanation:

I really don’t know Nd I need the answer to the question cuz I’m slow........HELP

How does DNA influence physical traits? I will give you 10 points and branliest answer if correct and within 20 minutes answered.

Answers

DNA is the genetic holder in our body ! for any message DNA has to convert in RNA and then protein resulting in all the traits we have !

so on transcription DNA information is converted to RNA and during translation into protein .... thus these protein helps in building our appearance , our Personalities every thing !

so we can say DNA influence physical trait !
Genes are sections of DNA that carry your information. This information is used  to build and maintain cells that make up different biological traits. Such as eyes, hair color, freckles,and etc. In addition, the DNA splits in two, and forms two different DNA strands during cell replication. ( So the DNA molecule is being copied to produce two identical DNA molecules). However, sometimes this process is not perfect, and mistakes occur. These mistakes may change the way an organism is constructed  or functions. 

Which is the best description of weathering?A. crystallizing to form minerals
   B. breaking rocks into fragments by physical or chemical means
   C. compacting rocks
   D. cementing rocks together

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weathering:
A) crystallization to form minerals
there minerals are usually sedimentary rock.

Name five substances that plants make from the glucose produced in photosynthesis

Answers

Five substances that plant makes from glucose are energy, starch, cellulose, fat and protiens.

What is the use of glucose made by photosynthesis ?

In plant cells, the respiration mechanism can use glucose as a substrate and break it down. The plant can utilise the chemical energy created during respiration for cellular processes like protein synthesis or cell division.

The complex carbohydrate starch can be created by linking thousands of glucose molecules together. Plant cells store starch in the form of grains.

The complex carbohydrate cellulose can be created by the linking of thousands of glucose molecules. Plant cells' cell walls are made of the extremely durable chemical cellulose.

Sugar can be changed by plant cells into fat, a different kind of molecule that stores energy.

Plant cells can also combine nitrates and sugars to produce aminoacids, which they subsequently use to build proteins.


Learn more about Photosynthesis, here:
brainly.com/question/26494694


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sunlight,water,oxegyn,carbin dixoside i can find the last one
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