A student performed an experiment to see if watertemperature affects the level of activity in aquaticsnails. The student set up four tanks with five snails ineach tank. All four of the setups were identical inevery way, except for the temperature of the water. Inorder to make the conclusions more valid, the studentcould

Scenario #2 in 2001, a population of 2,500 poison dart frogs lived in the amazon rain forest. due to increased deforestation, the population dwindled to 25 frogs in 2019. new government regulations were enacted in 2022, successfully putting an end to the deforestation of the amazon rain forest. once deforestation was stopped, the poison dart frog population was able to recover. by 2050, the population reached 8,000 frogs, of that population, 20 are homozygous recessive for being spotted (ss genotype). q2- ? q- p- p2- 2pq-

Mrna decodes information from the original dna master plan to build proteins in the during the process of ribosomes.

Match the correct terms to their descriptions a system in which only energy but not matter is exchanged frozen water in snow part of geosphere that includes only soil a thin layer between the troposphere and the stratosphere cryosphere tropopause closed system pedosphere