A farmer wants to grow green manure crops on his field. For this, he specifically wants to know the percentage of sand, silt, and clay in the soil. Which soil test should he conduct?
A.
pH tests
B.
nutrient tests
C.
soil texture tests
D.
organic matter tests
E.
structure tests

The ancestors of plants that lived in water had plenty of water for the young. angiosperms are a group of land plants that evolved a reproductive trait for living on land. this trait protect young plants by allowing them to grow only when water is present and the conditions for healthy development are right. what trait most likely young angiosperms in this way?

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of

What is the main fuel source for the work of the cell