Summery about biologists use experiments to test hypotheses

a. possible errors

d. new questions

explanation:

predictions and planning happen before. a summery comes after. errors you get after investigation and new questions propose what you can look for in the future.

yes it is   dangerous

explanation:

because that foot is discusting and could get you sick

2%? i tried finding the exact sorry if it's not 100% correct ; -;

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs