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

If someone could do the first couple, just so i can see how it's done that would be great! 20 points. complete a dichotomous key for the 10 leaves on the common leaves sheet. the chart provided here allows for 11 pairs of statements. depending on how you build your dichotomous key, you may or may not need all of them, or you may need to add some.

What are the headings of a data table

The response is the basis for vaccination. primary secondary tertiary none of the above