1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Romashka-Z-Leto [24]
2 years ago
12

Which of the following are the two main sources of oxygen in the air we breathe?

Biology
1 answer:
Gwar [14]2 years ago
3 0

Answer:

b

Explanation:

You might be interested in
70 year-old female patient presents with a complaint of right knee pain with weight bearing activities. she is also developing p
arlik [135]
<span>Per the updated 2018 ICD-10-CM codes, the appropriate reporting code will be M17.11 which specified Unilateral primary osteoarthritis of the right knee.</span>
6 0
3 years ago
I may need some help on a lot of these questions
stellarik [79]

Answer:

number three is ghe real answer

4 0
2 years ago
Jellyfish do not have a heart, true stomach, brain, or any other major organ. As a result, what else do jellyfish also lack?
barxatty [35]

Answer: It's  C

Explanation: because They also do not have a brain, respiratory system, or circulatory system.

6 0
3 years ago
Read 2 more answers
Which structure is responsible for controlling substances that enter and leave the cell?
maria [59]

Answer:

Cell Membrane

Explanation:

3 0
2 years ago
Which group of plants is MOST adapted to live in regions where the layer of soil beneath the surface stays frozen all the time
Sveta_85 [38]
<span>i think this could help When the surface of the soil is frozen, most plants die because they cannot get water and nutrients from the soil because of their *structures* hint are too short to get past the frozen layer. What plant structure brings nutrients and water to the plant from the soil? </span>
5 0
3 years ago
Other questions:
  • Genes are segments of DNA that determine the phenotype of an individual. Pea colors can be yellow or green. When two plants that
    9·2 answers
  • 01:04 An atom of carbon (C) forms covalent bonds with two atoms of axygen (O) to form carbon electrons of these atoms rearranged
    14·1 answer
  • Many factors determine the health of an aquatic ecosystem. Which choice list only abiotic factors?
    14·2 answers
  • PLEASE HELP!! I WILL GIVE BRAINLIEST BUT I DONT HAVE MUCH POINTS! What are the characteristics (wind? precipitation, vegetation)
    8·1 answer
  • Place the following terms in order to demonstrate the path that a nerve impulse makes through a neuron,
    7·2 answers
  • How does the burning of fossil fuels contribute to climate change?
    12·1 answer
  • EVEN MORE POINTS, again I luv all of you and hope you all have a great day.
    15·2 answers
  • While doing field research, two scientists discover a new species of plant. They take the plant back to their lab to watch how i
    6·1 answer
  • When the oxygen in the air combines with the iron exposed by paint peeling off an old
    7·2 answers
  • What feature on the microscope should you adjust so that you can see properly?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!