Answer:
A
Explanation:
Today, the atmosphere holds about 21 per cent oxygen. ... When the first simple organisms appeared in the oceans more than 3.5 billion years ago, the atmosphere was mostly nitrogen, hydrogen, water vapor, and carbon dioxide
Answer:
Lithosphere made the earth outermost layer, crust and upper portion of mantle.
Asthenosphere made the middle layer of earth.
Explanation:
Lithosphere:
Lithosphere made the earth outermost layer, crust and upper portion of mantle.
It is made up of tectonic plates.
Lithosphere present over the asthenosphere.
Lithosphere have low temperature as compared to asthenosphere.
Its rocks are rigid.
It is less viscous and dense
Asthenosphere:
Asthenosphere made the middle layer of earth.
When material present in asthenosphere solidify it becomes the part of lithosphere.
Asthenosphere have high temperature as compared to the lithosphere.
Its rocks are plastic and have tendency to flow.
It is more viscous and dense.
This tobacco plant is an example of a genetically modified organism.
Intelligence is most likely to be the criteria for random mating in humans.
Explanation:
If random mating is taking place on the conditions that no evolution is taking place the genetic pool will be maintained through generations.
Random mating will be based on intelligence in humans because this is the trait which gets exhibited only when showcased otherwise remains hidden while other characters like personality, appearance and athleticism are phenotypically expressed character.
Random mating is not under the influence of genotype. Intelligence is a trait which needs to be more in human as random mating takes genotype frequency in consideration.
We consider them to be made of 3 quarks, 'uud' for the proton<span> and 'udd' for the</span>neutron<span> where 'u' is the up quark and 'd' the down quark. ... Now, </span>protons and neutrons<span> are basically found at the atomic nucleus while </span>electrons<span> form the shell of the atom, moving around the nucleus.</span>
