The answer is; a layer of granite
This layer so granite is impervious hence is not porous. Due to its non-porosity, water cannot pass through it. These types of rocks are important in aquifers. When an impervious rocks sandwich a pervious layer or are below a pervious rock, an aquifer is created.
Metaphase leads to anaphase, during<span> which each chromosome's sister </span>chromatids separate<span> and move to opposite poles of the cell. Enzymatic breakdown of cohesin — which linked the sister </span>chromatids<span> together</span>during<span> prophase — causes this separation to occur.
</span>
The correct answer is option B- Clams
It is very clear how acid rain is affecting our ecosystem. Plants, animals and other living organisms are effected including their habitat.
When acid rain enters soil, it leaches aluminium from soil particles and mixes it with soil. Aluminium level in water intoxicates the water content which is critical for the survival of water animals.
The critical PH level for clams is 6.
False.
The definition of Arbitrary and Capricious is:
A clear error of judgment; an action not based upon consideration of relevant factors and so is arbitrary<span>, </span>capricious<span>, an abuse of discretion or otherwise not in accordance with law or if it was taken without observance of procedure required by law. 5 USC. 706(2)(A) (1988).
</span>
What is arbitrary to one can be perfectly sane to another one hence the statement is false.
