Small hive beetles, a pest of honey bee hives, must pupate in moist soil as part of their life cycle. a beekeeper placing his hives in full sunlight to reduce this pest by keeping the soil surrounding the hives drier would be an example of what type of control measure? biological/chemical/physical/mechan ical/cultural

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

answer; both surfaces of the membrane are nonpermeable

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.