Charles Darwin is solely responsible for coming up with the theory of natural selection.  He worked alone and didn’t base his theory on the findings of any other scientist.

A persistent toxin can accumulate in an organism’s body overtime. What is this process called?

As wind, water, an organisms move and sort the fine particles that weathering creates, distinct layers eventually developed. Age layer of soil is known as a soil horizon; which soil horizon level is the crucial horizon for agriculture and ecosystems?

Humans can respond to climate change in two fundamental ways: adaptation or mitigation. Which of the following would be considered a mitigation technique?

Which of the following would be an example of an energy conservation practice.

Demographic transition is a model of economic and cultural change which explains how birthrates and death rates are altered when a nation becomes industrialized. there are four stages of demographic transition: preindustrial stage, transitional stage, industrial stage, and postindustrial stage. At which stage do birth rates begin to decline?

Nuclear energy is obtained throught the process of nuclear fission in which the nucleus of an atom is used to split an atom into smaller atoms. Which atom is typically used?

Fertilizers are substances that contain essential nutrients for plant growth and Are applied to enhance nutrient-limited soils and of organic fertilizers and compost would constitute as which type of agriculture?

The artificial provision of water to support agriculture is known as irrigation. Over irrigation can cause the water table to rise to the point that the water drowns appliance roots, depriving them of access to gases and essentially suffocating them. what is this process called?

HonorLock is a system that proctors students so that they can take Unit tests at home under testing conditions rather than coming to the classroom.