Black widow spiders are considered the most venomous spiders in north america. they are roughly 1.5 inches long. black widows have a life cycle of one to three years. is a black widow spider a vertebrate or an invertebrate? be sure to justify your answer.

sample response

Explanation:

A black widow spider is classified as an invertebrate. It does not have a backbone or internal skeleton. It has an exoskeleton. The life cycle for the black widow spider is short.

A black widow spider is classified as an invertebrate. It does not have a backbone or internal skeleton. It has an exoskeleton. The life cycle for the black widow spider is short.

Explanation:

that was the sample response, but if you want to make your own then these are thing you need to include:

the answer is false?

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.