According to most scientific models, how many years ago did the first simple cells appear on Earth?

1 answer:

7 0

About 3.6 billion years ago, one billion years after the formation of Earth, the first simple cells (prokaryotes) appeared on Earth. Hope this helps!

You might be interested in

Describe the process by which vaccines induce immunity.

eimsori [14]

Answer:

A vaccine works by training the immune system to recognize and combat pathogens, either viruses or bacteria. To do this, certain molecules from the pathogen must be introduced into the body to trigger an immune response. These molecules are called antigens, and they are present on all viruses and bacteria

Explanation:

3 0

3 years ago

12. Leaf cells in trees store lots of water and glucose from photosynthesis. What organelle should the

choli [55]

Answer:

cytoplasm

Explanation: knowledge

8 0

3 years ago

Read 2 more answers

Which substance is the focal point of climate models such as sea ice, heat and salinity exchange, and phase changes?

Anastasy [175]

Carbon dioxide should be the answer considering its a huge focal point in our climate today and how it affects it.

4 0

2 years ago

2. Why is hydrogen placed in group one of the periodic table?

romanna [79]

Answer:

because, it resembles the properties of alkali earth metals as well as halogens ! OwO

Explanation:

" Hydrogen resembles the properties of alkali earth metals as well as halogens. Hydrogen has one electron in its valence shell and it also needs one more electron to get stable. ... For this the hydrogen is placed separately in periodic table ! "

P.s: sharky said thanks for the points !

6 0

3 years ago

Read 2 more answers

Does Planet Nine follow Kepler’s Second Law?

lord [1]

Yes, the planet obeys the Kepler's Second Law. It is because it moves at equal time of one month at the same distance.

8 0

2 years ago