Answer:
B. 1,000,000
Explanation:
A pH of 14 is 1 x 10^-14 while a pH of 8 is 1 x 10^-8.
So, all we have to do is subtract 8 from 14 and then solve it.
14 - 8 = 6
1 x 10^6 = 1,000,000
The "soil type" is an example of abiotic factor to an earthworm. Abiotic factors are the non-living factors which influence the earthworm present in soil. Thus, the correct option is A.
<h3>What is Abiotic factor?</h3>
Abiotic factors are the non-living components of the environment that affect living organisms and the functioning of the ecosystems as a whole.
Soil type is an abiotic factor for the earthworm present in it. The soil helps an earthworm to collect food and hence in increasing its population. Soil is made up of the rocks, minerals and other non-living particles.
Therefore, the correct option is A.
Learn more about Soil here:
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prokaryotic gene regulation is geared toward responding
Explanation:
Methods to increase or reduce friction
Grease is added between the moving parts in machines, to reduce friction. Another method of reducing friction is by using bearings. When ball bearings are introduced between two surfaces friction is reduced because of the freely rotating metal balls.
Evolution comes in many different ways it depends on how you percept it