Ecology Practice

Humans have an effect on ecosystems when they use native grasslands or forested areas for farming or urban use. One negative effect of these changes on the ecosystem is that there will be

• Less biodiversity

• More homes

• Successful economic growth

• Increased food production

Based on this information, which ecosystem is likely to be the most stable?

• A

• B

• C

• D

The organisms represented by X are

• Decomposes

• Producers

• Carnivores

• Scavengers

What is ecology?

• The study of living organisms

• The study of the interactions between living organisms and their environment

• The study of chemistry in the environment

• The study of the human body

Which of the following is an abiotic factor in an ecosystem?

• Trees

• Deer

• Soil

• Birds

Which of the following is an example of a producer in an ecosystem?

• Lion

• Oak tree

• Rabbit

• Hawk

What is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen?

• Photosynthesis

• Respiration

• Decomposition

• Predation

Which of the following best describes a food chain?

• A network of interconnected food webs

• A linear sequence of organisms, where each is a source of energy for the next

• A group of unrelated species living in the same habitat

• A diagram of an ecosystem's abiotic components

What is the term for the maximum number of individuals of a species that an ecosystem can support without degrading the environment?

• Carrying capacity

• Population density

• Predation limit

• Ecological footprint

Which of the following is a greenhouse gas that contributes to global warming?

• Oxygen

• Nitrogen

• Carbon dioxide

• Hydrogen