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
Viefleur [7K]
2 years ago
7

In the fossil record, there is no evidence of anything living on land before plants. Why are plants necessary before more compli

cated animals can evolve?
A. Plants were not needed.
B. Plants were needed to produce Carbon dioxide.
C. Plants were needed to change the soil content.
D. Plants were needed to produce oxygen.
Biology
1 answer:
stiv31 [10]2 years ago
6 0

Answer:

maybe option D is correct

You might be interested in
Hii please help me...
zzz [600]
The Earth spinning on its axis is what causes day and night. when the Earths surface has direct sunlight from the sun it is day time. When the Earths surface is away from the sun it gets indirect sunlight causing it to be night time. may I have the brainliest ?!!
3 0
2 years ago
Read 2 more answers
15. A bug flies into a car's windshield. Describe the force of the windshield to the bug and the force
sammy [17]

Both the force of windshield on the bug and that of the bug on the windshield are equal but in opposite direction.

<u>EXPLANATION: </u>

When the vehicle is moving forwards and air flows around it, and it also causes the flying bugs to hit the windshield. This impact causes a force that is imparted on both the bug and the windshield.

Thus both the bug and the windshield experience equal and opposite reactions result in Newton's Third law of motion. According to this law, it states that there will be an equal and opposite reaction for every reaction.

4 0
3 years ago
A student swings his keychain around in a circle. What is the source of the centripetal force for this action?
Margarita [4]
The source of the centripetal force for this action is tension

Hope that helps :)
5 0
3 years ago
Read 2 more answers
Why is it necessary that the solar concentrators used by solar power plants be able to move throughout the day?
kramer

Answer:

It necessary that the solar concentrators used by solar power plants be able to move throughout the day: To track the sun as it moves across the sky. The Brainliest Answer! Answer: improvement in a solar panel efficiency using a solar concentration by simple mirror and by cooling.

6 0
3 years ago
List all four body systems that make up the excretory system and give an example of how each body system eliminates waste.
mart [117]

Answer:

Organs of excretion make up the excretory system.

They include the :

kidneys-Blood by-products are filtered out by the kidneys and leave the body in urine form. They are part of the urinary system, which also includes the ureters, bladder, and urethra

large intestine-By-products enter the intestine and leave the body in the form of feces

liver- breaks down harmful substances. It's by-products are excreted into bile or blood.

skin-Sweating eliminates excess water and salts, as well as a small amount of urea, a byproduct of protein catabolism

lungs- oxygen is exchanged for a waste gas called carbon dioxide. Your bloodstream then carries this waste gas back to the lungs where it is removed from the bloodstream and then exhaled

Hope this helps!!!!!!

Forever friend and helper,

Cammie :)

4 0
3 years ago
Other questions:
  • What is electrochemical gradients​
    6·1 answer
  • From where did the carbon in all living things come?
    14·2 answers
  • Which answer choice correctly lists the level of organization from most basic to most complex
    6·1 answer
  • PLEASE HELP FAST! Which best describes the purpose of a control sample? A. to have more quantitative data to analyze at the end
    13·2 answers
  • Select all that apply.
    12·2 answers
  • Organisms that rely on other living things for food are called .
    5·2 answers
  • Jumping Jack Flash is a champion racehorse. A special diet and daily exercise have made him the fastest horse in the country. In
    11·2 answers
  • Unscrewed vehicles designed to travel around the surface of a planet while collecting data are called what?
    10·1 answer
  • Why is it necessary to eliminate absolutely all invasive fire ant colonies to eradicate the invasive population?
    11·1 answer
  • Sandra wants to modify the diagram to include chlorophyll. Which would be the most useful strategy? A. Add representations of ch
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!