In some genetically engineered corn plants the dominant gene bt produces a protein that is lethal to certain flying insect pests that eat the corn plants. if the corn plant is heterozygous for bt, what proportion of the pollen would carry the dominant gene?

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight.which of these is the most likely effect on the ecosystem? a-an increase in biodiversity. b-an increase in immigration to the area. c-a decrease in available water. d-a decrease in plant growth.

Here's one way to follow the scientific method. place the missing steps in the correct position in the process.

List the advantages and disadavantages of the switch from persistent chlorinated hydrocarbon pesticides (such as ddt) to nonpersistent organophosphate pesicides. have the benefits of the switch outweighed the disadvantages? explain.