1. Which of the following is NOT a key factor important to the development of human society? A. Access to clean water
B. Access to fertile soil
C. Access to cities
D. Access to natural resources

Which events are likely to be catastrophic to an ecosystem? select the three correct answers.a-hurricane.b-steady population growth.c-seasonal flooding.d-introducing of an aggressive invasive species.e-tsunami.

Compare the depth of field when focusing with low power and high power. which power has the greater depth of field?

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.