Which refers to species of organisms whose population is so low that it has a great tendency to become extinct?

• Endangered

• Exotic

• Endemic

• Threatened

Which is the process of introducing unnatural chemicals that contaminate the air, soil, and seas?

• Acidification

• Neutralization

• Eutrophication

• Pollution

Tags

NGSS.MS-ESS3-3

NGSS.MS-ESS3-4

The amount of sunlight in a forest ecosystem determines the kind and population of plants and trees that could thrive and survive to maintain balance in the said ecosystem. Which refers to the “amount of sunlight” as mentioned above?

• biodiversity

• carrying capacity

• limiting factor

• population density

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which is NOT a cause of deforestation?

• typhoons

• kaingin system

• soil erosion

• conversion of forests to agricultural lands

Which is the correct formula for calculating population density?

• D = population/area

• D = number of runs/total population

• D = population x area

• D = number of runs x total population

Which pertains to organisms that no longer exist at the present time, but have existed in the past?

• Exotic

• Endemic

• Endangered

• Extinct

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Which of the following causes of extinction is directly brought about by human activity?

• Glaciation

• Overharvesting

• Cosmic radiation

• Volcanic eruption

Tags

NGSS.MS-LS2-4

Which is NOT a cause of deforestation?

• typhoons

• kaingin system

• soil erosion

• conversion of forests to agricultural lands

Which is NOT a common reason for a species to go extinct?

• Random mutation in DNA

• New disease is introduced to a population.

• Habitat loss and destruction

• New predators moving into or introduced into an area.

Which is NOT a consequence of cutting down trees?

• floods

• eutrophication

• soil erosion

• decrease in wildlife resource

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5