Before manipulating any area of the hubbard brook forest, the researchers spent several years studying the natural watersheds of the forest to try to understand how nutrients move through the various living and nonliving components (reservoirs) of the ecosystem.

chromosomes carry the genetic information for organisms. also, chromatin is the thread like dna which is located in the nucleus of an organism.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

on the planet jupiter, the acceleration due to gravity is approximately 26 m s2 , roughly 2.7 times the acceleration due

maybe because its impossible for balloons to lift a whole entire house.