"a group of organisms of the same species that has specific characteristics that can distinguish it from other varieties of that species."

"the amount of useful plant material produced per plant, or per area planted in a particular crop."

"A chemical that kills unwanted plants."

"a technology for producing new varieties of an organism that involves choosing parents with desired traits in order to produce offspring with these traits."

"tiny piece of material in a cell's nucleus"

*first part of definition

"a technology for controlling pests in which the natural predators of the pests are introduced into an environment to reduce their population size."

"living things of the same kind that can reproduce."

"a characteristic of an organism."

"the process of balancing the needs of humans with the needs of the environment."

"process in which single genes are added to a plant's genetic material."

"chemicals that are poisonous to insects."

"the practice of growing only one type of crop in a large area."

"can be maintained or continued; capable of being used indefinitely, often referring to the use of resources."

"results of an action that were not predicted or planned."

"the number of different species in an environment."

Biodiversity is ...

Artificial environments are...

When a living resource is being used up faster than it can be replaced, it is called...

When a plant reproduces from its stem, the new plants are called suckers.

Calcium is the nutrient responsible for the green colour in leaves.

In soil, the _______ are made from plants and animals that were once living.