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

What are examples of the plant life and animal life that can be found in each type of terrarium

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one

Number and variety of living organism; includes genetic, species, and ecological types