Identify the biotic factor of an ecosystem from the following:
a. soil composition
b. trees
c. temperature
d. sunlight

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.

The negative change found inside the plasma membrane is created by potassium ions sodium ions hydrogen ions chlorine ions

Drag the tiles to the correct boxes to complete the pairs. match the nitrogenous base of dna with its complement.