The signs for numbers 6-9 are identical except for which detail? which finger is touching the thumb whether the palm is facing inward or outward whether you use the right or left hand to sign it whether you're pointing your fingers up or down

answer: zinc is the substance which has a volume of 1.38 .

density is defined as the mass of an object per unit volume.

it can be calculated by dividing mass of a substance by its volume i.e.

si unit of density is kg per cubic meter and cgs unit of the same is gram per cubic centimeter.

now from the given data volume can be calculated by the formula .

hence, the volume of aluminium will be = which comes out to be 1.703 .

similarly, volume of zinc, chromium, and nickel will be 1.378 , 0.869 , and 0.356 respectively.

it is a limiting nutrient limited by a single nutrient in the ecosystem, & the single goes very slow.