Is the following an example of a positive or negative impact on the earth's ocean systems?

Artificial reefs placed on the seafloor enhance marine life by creating new reef habitats.

Is the following an example of a positive or negative impact on the earth's ocean systems?

Fertilizers from farms runoff into rivers and create dead zones at the mouth of rivers in our world's oceans.

Carlos has made a list of nonrenewable natural resources. Which two resources do not belong on his list?

The graph shows the change in the percentage of forest area on Earth’s surface from 1990 to 2014. Which are the two most likely reasons for this change?

Select the correct category for the following conservation effort:

Using ceramic plates instead of paper plates

The bar graph shows the recycling rate of five items in 1990, 1995, and 2000.

In what year was the recycling rate for aluminum cans the greatest?

Where is pollution found on the earth?  

Energy sources that will never run out, can be reused

Which human activity would preserve nonrenewable resources?

Resources that are not able to be reproduced as quickly as they are used are called _____.

Sewage, industrial waste, oil, pesticides and fertilizers all __________ water.

Things found in nature that can be used to our benefit is called _________.

What are the three R's of conservation?

Fossil fuels are what type of resources?

True or False:

Using a reusable water bottle instead of throw away bottle will help our planet.

Resources in nature such as wind, water, sun, and living things that are easily replaceable.

a single, self-contained, living thing

the space, conditions, and all the living and nonliving things around an organism