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Nady [450]
3 years ago
6

Which organisms appeared on earth first

Biology
2 answers:
STatiana [176]3 years ago
6 0

The organisms which appeared on earth first was bacteria.

<u>Explanation:</u>

  • The first-ever living organism on Earth was a bacteria known as cyanobacteria. It is believed by scientists that it first formed around 3 billion years ago.
  • When the Earth was first formed, it was inhospitable for a long time until 3.8 billion years ago approximately, the core cooled down and the level of oxygen had risen. This, along with photosynthesis resulted in the formation of Cyanobacteria.
  • These organisms were capable of carrying out the process of photosynthesis by which they prepared their food. These were known as common ancestors. All the living organisms thereafter are known to be their descendants.
baherus [9]3 years ago
4 0

Bacteria.

<u>Explanation:</u>

The first living beings on the Earth, were the single-celled organisms called as micro-organisms or the microbes that lacks a cell membrane or cell nucleus known as Prokaryotes, seems to be appeared first on the Earth almost 4 billion years ago, which was just a few 100 million years subsequent to the Earth formation itself. Considerably, the longest part of the life history on the Earth, thus, involved the biochemical development of these unicellular micro-organisms, such as bacteria and archaea.

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The presence of what type of metal in the Cretaceous/Tertiary boundary may be evidence of an asteroid strike or volcanic activit
Serjik [45]

Answer:

asteriod strike is most likely to be the one

Explanation:

A volcanic activity would have that stuff

8 0
2 years ago
A____is a musculoskeleteal injury in which there is a partiral or temporay seperation of the bone ends as well as partial tretdh
Reptile [31]

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4 types of musculoskeletal injuries includes repetitive strain injuries (RSIs), repetitive motion injuries, cumulative trauma disorders (CTDs), work-related upper limb disorders (WRULDs).

Most common type of musculoskeletal injury is Muscle Strains, back pain, and arthritis . Muscle strains can happen due to improper technique of lifting heavy objects, lifting too much weight at one time, and repetitive movements. The key symptoms of a muscle strain are sudden pain that worsens while contracting the muscle, swelling and bruising, loss of strength and range of motion. People often report the sensation of pain as the feeling of being "stabbed." When muscle is initially injured, significant inflammation and swelling occurs.

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6 0
1 year ago
Describe how the three different types of seismic waves move and affect the movement of the material they pass over or through.
son4ous [18]
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1. P wave: It is the fastest of all three waves that travel through the interior of the earth and are compressive waves.
2. S wave: Secondary waves generally follow the P waves and travel through the interior of the earth but are shearing waves.
3. Surface wave: This is the slowest of all three waves that moves close to the surface of the ground.

These waves affect the movement of other materials when they are passing through the interior or surface of the earth.
P waves can move through the solid rocks and even liquids. S waves do not travel through the  liquids such as water and molten magma. Surface waves causes shaking of the ground and do not go deep inside the earth.
7 0
3 years ago
GIVING BRAINLIEST!!!
Darya [45]

Answer:

D

Explanation:

it just makes sense to me

4 0
2 years ago
Read 2 more answers
Choose the answer that best completes the sentence below.
n200080 [17]

Living and nonliving things in an ecosystem interact with each other; on the other hand, plants use energy from the sun.

Explanation:

The ecosystem is an interaction circumstance between the living and non - living things which exists in an environment and has an impact on its too. The essential source of energy to this ecosystem is the solar energy coming from the sun.

But the energy from the sun could only be taken up by the plants and being used in photosynthesis to produce food and oxygen which required by other living things of the ecosystem. This essentiality is exclusive of the plants.

5 0
3 years ago
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