4º E.S.O. - Humans and ecosystems

Any alteration or modification resulting from human activities is a:

• Negative impact

• Positive impact

• Human impact

• Environmental impact

Pollutants can be:

• Energy

• Chemical agents

• Physical agents

• Biological agents

Consequences of global warning can be:

• Destruction of ecosystems

• Extinction of species

• Melting of polar caps

• Extintion of diseases

Acids in acid rain are:

• Sulphuric and nitric

• Sulphuric and fosforic

• Nitric and fosofric

• Nitric and carboxide

The ozone layer acts like a filter preventing this solar radiation from reaching the Earth's surface:

• Ultraviolet

• Infrared

• Visible

• All of them

When toxic substances become concentrated inside of living things and are passed through food chains, this is called:

The loss of soil is called:

• Desertification

• Deforestation

• Erosion

• Overuse

Species in risk of becoming extinct are:

• Endangered species

• Rare species

• Vulnerable species

• Dangerous species

Syringes are waste that belong to:

• Medical waste

• Industrial waste

• Municipal solid waste

• Livestock waste

Plastic is waste that belongs to:

• Medical waste

• Industrial waste

• Municipal solid waste

• Livestock waste