Name of the german scientist from the 1800's that studied animals

Witch theory suggests all living things are made up of cell or cells

Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.

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