The primary reasons agricultural productivity increased during the Green Revolution was been a combination of fertilizers, crop breeding, pest control, and . increased rainfall irrigation improvements less overgrazing organic farming techniques genetically modified organisms

Nasa scientists must work together to make sure that everything is correct and accounted for when launching a shuttle. besides a physicist, what other type of scientist would be in making sure that the shuttle has the appropriate type and amount of fuel to reach its destination?

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

People with one sickle cell allele are not likely to get malaria. what is this an example of?