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Eddi Din [679]
3 years ago
10

PLZZZZZ HURRY!!!!!Scientists estimate that the Earth formed some 4.6 billion years ago with the first forms of life appearing ar

ound 3.5 billion years ago. These first forms of life were simple prokaryotes. Later, the first photosynthetic organisms resulted in more _____________ in the atmosphere. This allowed for more higher level organisms to appear on Earth.
A) carbon
B) nitrogen
C) oxygen
D) sulfur
Biology
1 answer:
FinnZ [79.3K]3 years ago
3 0
I have no idea, i speak english how about u

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Mandarinka [93]

T86.49, C80.2, C22.0 codes are reported.

<h3>What issues arise following liver transplantation?</h3>
  • Some cancers are more likely to develop after a transplant. For liver transplant recipients, cancer is a substantial cause of sickness and mortality.
  • Nearly all malignancies are more likely to occur after a liver transplant, but skin cancer, lymphoma, and cancers linked to smoking are more likely to do so.
<h3>What liver transplant problem occurs most frequently?</h3>

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7 0
1 year ago
The primary electron acceptor in photosystem II is __________. Group of answer choices P700 P700 P680 P680
sesenic [268]

Answer:

680

Explanation:

When the P680 special pair of photosystem II absorbs energy, it enters an excited (high-energy) state. Excited P680 is a good electron donor and can transfer its excited electron to the primary electron acceptor, pheophytin.

7 0
2 years ago
If the parents have ab and o blood type what type is the childs?
yKpoI14uk [10]

Answer:

parents with AB and O blood types can either have children with blood type A or blood type B. These two types are definitely different than parents' blood types!

hope i helped. if i can get brainliest that would be great

4 0
3 years ago
Read 2 more answers
HELP ASAP<br><br> i don’t know if even my puzzle pierce is correct
Wewaii [24]

Answer:

Your answers are included in the picture attached below..

Explanation:

Self reliant is correct.

Problem solvers would be matched with the third one on the right side.

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inventors would be matched with the one across from it, or the last one on the right side...

Hope this helps! Brainliest would be much appreciated! Have a great day! :)

8 0
2 years ago
When is a hypothesis considered scientific?
Ronch [10]

A hypothesis is considered scientific if it has something that can be supported or refuted through carefully crafted experimentation or observation

8 0
2 years ago
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