Biodiversity simply means ____________________.

• a variety of life

• a variety of plants

• a variety of animals

• a variety of human race

Which of the followingi is the largest ecosystem in the world?

• Dessert

• Ocean

• Mountain

• Grassland

Which of the following is an EXAMPLE of biotic factor in an ecosystem?

• Plants

• Sunlight

• Soil

• Light

When can we say that extinction occurs?

• when organisms stop reproducing

• when the last species dies

• when the species is decreasing

• when the species is reproducing

Which of the following activities supports the ecosystem sustainability?

• Industrialization

• Deforestation

• Hunting

• Reforestation

Which of the following is an abiotic factor?

• Animals

• Plants

• Fungi

• Water

Endangered animals are _____________________.

• at risk of extinction

• captured in the zoo

• living in wildlife

• at risk of communicable disease

A group of same kind of species living in a certain area at a particular period of time.

• Habitat

• Ecosystem

• Population

• Organization

What will likely to happen if there is a rise of population size above the carrying capacity?

• Organisms will die because needs cannot be meet.

• Organisms will keep on reproducing.

• Organisms will consume less supply.

• Organisms will move to another ecosystem.

Which of the following factors affects the population size?

• Birth

• Death

• Migration

• All of these