All cells have similar structures, including select all that apply.
a) a plasma membrane
b) vacuoles
c) cellwall
d) cytoplasm
e) chloroplasts
f) protoplasm

In stage 2 farmers used the land primarily to grow food for their families and their small communities.

17. the soil erosion pictured here is the result of what? a. harvesting renewable resources at a rate greater than the sustainable yield b. a mudslide caused by excessive rains c. harvesting renewable resources at a rate lower than the sustainable yield d. the transition between geologic eras and eons

You have been tasked with sorting the rock samples shown into three categories, with two rocks in each category. what attribute would you use to sort these rocks? which rocks would be in each category? rocks: obsidian, coquina limestone, granite, soapstone, pumice, and gneiss.