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
Vaselesa [24]
3 years ago
13

Which of these statements is true about the oxygen revolution? A. Cyanobacteria were the first organisms to introduce oxygen int

o the atmosphere. B. Protocells were the first organisms to produce oxygen in water, which then escaped into the atmosphere. C. Cyanobacteria were the first organisms to produce oxygen in water, which then escaped into the atmosphere.
Biology
2 answers:
GalinKa [24]3 years ago
8 0

Answer:

its A trust me

ziro4ka [17]3 years ago
3 0

Answer:

I believe it is (C), (Cyanobacteria were the first organisms to produce oxygen in water, which then escaped into the atmosphere.) Hope this helps(:

Explanation:

You might be interested in
Haploid cells are
hichkok12 [17]
<span>C) sex cells with half the original chromosome number.

Hope this helps!
</span>
8 0
3 years ago
Read 2 more answers
Ant lions are small insects that dig funnel-shaped depressions in sandy areas. They hide in the dirt at the bottom of the funnel
Over [174]

Answer:

Predator-prey relationship

Explanation:

A predator prey relationship is one in which interactions usually with consequential effects occurs between two different species. One species usually feed on the other. The species being fed on are the prey while the species being fed is the predator. In this context, the prey is the ant and the predator s are the ant lions.

5 0
3 years ago
Read 2 more answers
The nucleotide is _____________.
Tems11 [23]
I think it might be A bit I’m not sure hope this helps
8 0
3 years ago
Greater portions of the beach begin to reappear during _____.
masya89 [10]
Greater portions of the beach begin to appear during ebbing tides, until the maximum amount of beach is visible at low tide. They usually happens twice in a day. Beaches results from wave action by which waves or currents move sand or other loose sediments of which the beach is made as these particles are held in suspension.
7 0
3 years ago
Comparison of the excretory system of a rat, frog and human
yaroslaw [1]
In general, the function of the excretory system is,  removal of nitrogen waste products from the bloodstream and transport out of the body through urine. It maintains the balance of fluids and electrolytes, control of red blood cells, regulation of blood pressure and also the formation of red bone marrow.
In humans, the excretory system is responsible for removing waste from the body. Metabolic waste is being removed from the blood and an appropriate amount of water nutrients and water and salt are being retained.
In frogs, the excretory system consists of a pair of ureters, kidney pairs, cloaca, and urinary bladder. Frogs take in liquid waste from kidney which removes wastes and then the extra water becomes urine which then it is collected in the urinary bladder through ureters.
The urinary bladder is present in ventral to return then both open into the cloaca.
3 0
3 years ago
Other questions:
  • Describe the tolerance range of temperature of a named terrestrial animal​
    6·1 answer
  • An organism that feeds upon producers is known as a _______. A. decomposer B. primary consumer C. secondary consumer D. secondar
    11·2 answers
  • In most cases, cardiopulmonary arrest in infants and children is caused by: select one:
    11·1 answer
  • What happens when sand and gravel are whirled around by eddies in a river?
    9·1 answer
  • Please help me in number 2 question, Thanks
    15·1 answer
  • Freshwater biomes have
    13·1 answer
  • 17. In order for oxygen in the inspired air to reach hemoglobin, it must diffuse across all of the
    15·1 answer
  • What are immortal cell lines and why are they important for cell research?
    14·2 answers
  • The head of a phospolipid interacts with water because it is
    5·1 answer
  • Humans need oxygen to be able to perform cellular respiration and gain ATP energy for our cells. What would happen to the oxygen
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!