Answer:
single-celled micro-organisms
Explanation:
The first living things on Earth, single-celled micro-organisms or microbes lacking a cell nucleus or cell membrane known as prokaryotes, seem to have first appeared on Earth almost four billion years ago, just a few hundred million years after the formation of the Earth itself.
The answer for your question is letter A
Answer:
D
Explanation:
Deforestation involves totally cutting down of trees without replacement hence destroys the cover which exposes biodiversity to destruction
Portugal cuz it has never been in contact with British. South Wales and North Wales are definitely part of you need to give an example of another country say Southern Ireland cuz only the North is part.
<u>Answer:</u>
The seismic waves that stay on the Earth's surface are called surface waves.
<u>Explanation:</u>
- The waves that are formed near the Earth's surface and are sandwiched between the surface of the Earth and the atmosphere are known as surface waves.
- These waves are not absorbed back by the surface or do not even mix up with the atmosphere easily.
- Thus they stay on the surface of the Earth for a long time after they are generated.