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
oksian1 [2.3K]
3 years ago
12

What was the time frame?

Biology
1 answer:
Andrew [12]3 years ago
3 0

Answer:

4.6 to 4 Billion Years Ago

Explanation:

According to the researchs and studies, the earth formed about 4.54 billion years ago and the oldest known living organism date to around 3-3.5 billion years ago which are the first bacteria that formed in the water.

I hope this answer helps.

You might be interested in
Pistil is the male reproductive part of the plant.<br><br><br><br><br> True or false?
rusak2 [61]

Answer:

false bestie, that's a women's

4 0
3 years ago
Read 2 more answers
How did lucy survive?​
Aleksandr-060686 [28]

Answer:

Which Lucy?

Explanation:

7 0
3 years ago
Read 2 more answers
What is the difference between lymph and blood
natka813 [3]

Blood and lymph are the two circulating fluids in the animal body. Blood belongs to the circulation system whereas lymph belongs to the lymphatic system. Blood contains pigments which carry oxygen. Therefore, blood can be found in different colors in different types of organisms. But, lymph is a colorless fluid. Blood is composed of red blood cells, white blood cells, platelets and a fluid called plasma. Lymph is composed of white blood cells and a watery fluid. Both blood and lymph possess a circulatory function as well as an immune function. The main difference between blood and plasma is that blood circulates inside blood vessels whereas lymph circulates inside lymphatic vessels.

6 0
3 years ago
18.Substrate-level phosphorylation
77julia77 [94]

Answer:

(B) Energy released from the chemical reaction is used to directly phosphorylate ADP.

(D) Energy released from the chemical reaction is used to directly reduce NAD+

Explanation:

phosphorylation is a addition of phosphoryl group to an organic compound.Substrate level phosphorylation is a process where there is ATP is produced from ADP by transferring a high energy phosphate group from phosphorylated metabolic compound.This process occurs in glycolysis and citric acid cycle.and this pathway is exergonic pathway

8 0
3 years ago
When scientists discuss the Sixth Extinction, they are referring to which pattern in the rate of extinction?
Travka [436]

Explanation:

The Holocene extinction, otherwise referred to as the sixth mass extinction or Anthropocene extinction, is an ongoing extinction event of species during the present Holocene epoch (with the more recent time sometimes called Anthropocene) as a result of human activity.[3][4][5] The included extinctions span numerous families of plants[6] and animals, including mammals, birds, reptiles, amphibians, fishes and invertebrates. With widespread degradation of highly biodiverse habitats such as coral reefs and rainforests, as well as other areas, the vast majority of these extinctions are thought to be undocumented, as the species are undiscovered at the time of their extinction, or no one has yet discovered their extinction. The current rate of extinction of species is estimated at 100 to 1,000 times higher than natural background extinction rates.

.

please. follow. me

8 0
3 years ago
Other questions:
  • Genetically modified (GM) foods make it possible to produce more food on less land. However,
    7·1 answer
  • What do flowers and runners have in common?
    10·2 answers
  • Which plants form seeds in structures
    10·1 answer
  • in humans, having wet earwax is a dominant trait. having dry earwax is recessivea woman has two dominant alleles. what is her ph
    7·1 answer
  • An organism that can produce its own energy using sunlight is called a(n)
    9·1 answer
  • The vertical distance between trough and crest is called the _____.
    15·1 answer
  • What is ambulocetus?
    8·1 answer
  • What are the three metabolic processes that make up cellular respiration?
    14·1 answer
  • Which of the following is an example of an adaptation? a Different shaped tortoise shells b Variation in beak shape c Color chan
    11·1 answer
  • Cell bodies of sensory neurons are located in ________. Group of answer choices sympathetic ganglia the ventral root ganglia of
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!