Which of the following describes a biotic factor of an ecosystem interacting with an abiotic factor in the ecosystem? A. A child lying on the grass
B. A duck diving into a lake
C. A raindrop falling onto the ground
D. A puddle evaporating due to the heat

Molecular models of two different substances are shown below. in the molecule on the left, the oxygen atom pulls on electrons more strongly than the hydrogen atoms. in the molecule on the right, the two oxygen atoms pull on the shared electrons with the same strength. water molecule, h,o oxygen molecule, oz when the two substances are put in the same container, they do not attract each other. why does this happen? a. they both contain oxygen. b. one is polar and one is nonpolar. c . they are both polar. d. they contain different elements.

Describe how alleles and genes are related

Whay is the following best defines climate