Environmental Sci - Biodiversity and Human Impact on Life

Which of the five human causes most directly harms and endangers other species?

• Habitat destruction and fragmentation

• Pollution

• Climate Change

• Overhunting, overharvesting, and poaching

Biodiversity can be studied and described at three levels:

• molecular, biochemical, and physical diversity

• 1. species diversity, genetic diversity, and ecosystem diversity

• animal, plant, and fungal diversity

• color diversity, species diversity, and habitat diversity

Different types of cats are all the same species, but with many varieties of traits within the cat species. Which type of biodiversity do cat populations show?

• genetic diversity

• species diversity

• ecosystem diversity

• biodiversity hotspot

A characteristic of ecosystems with high biodiversity which means there are many different types of organisms

• high species diversity

• high genetic diversity

• abundant resources

• complex food web

A characteristic of ecosystems with high biodiversity which means there are many options for food and prey

• high species diversity

• high genetic diversity

• abundant resources

• complex food web

There are Five Human Causes of Extinction (HIPCO). What does the H stand for?

• Hairless molerat

• Harvesting endangered species

• Habitat destruction and fragmentation

• Hunting and poaching

An (a)   species is a species that is not native to a particular region.

Why are invasive species a problem for ecosystems? (multiple correct answers)

• few predators

• adaptable

• reproduce slowly

• outcompete native species for resources

Climate change is caused by

• accumulation of nitrogen gas in biosphere

• decrease in CO2 which thins atmosphere and allows heat to escape

• accumulation of CO2 and greenhouse gases in atmosphere

• absorption of greenhouse gases by trees

Which of the following are examples of fossil fuels?

• water and oxygen

• nitrogen and ammonia

• coal and oil

• dinosaur bones