Mammals that live in the arctic ocean have a large amount of blubber, which is a fatty tissue just beneath the skin. which statement best relates why these animals have so much blubber?
lipids in blubber insulate the animals from cold water.
proteins in blubber the animals move to stay warm.
carbohydrates in blubber provide all the energy that the animals need to stay warm.
nucleic acids build the lipids in blubber, which keep animals warm by regulating cell activities.

Put these processes of the water cycle in the correct order, starting at the point where the water is in the lake: 1. water evaporates into the atmosphere 2. rain, snow, or other precipitation falls 3. water collects into larger bodies of water 4. water vapor condenses into liquid water

An observation that requires measurement is called quantitative observable or qualitative

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)