Which of the following is an example of an organism's niche?
A. A dog chasing its tail
B. A bird fell out of its nest
C. The little boy is late for school
D. The early bird gets the worm

Study the diagram of a cell. which structure is found only in plant cells and functions in the process of photosynthesis? w x y z

What is the main fuel source for the work of the cell

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