CAST

Front

What is the most popular skittle according to the graph?

Back

Red

Front

In an experiment, what is the variable that is changed or controlled to test its effects on the dependent variable?

Back

Independent variable

Front

What happens when there are too many nutrients like nitrates and phosphates in water?

Back

They cause too much algae growth, which decreases the level of oxygen in the water.

Front

What is a biological community of interacting organisms and their physical environment called?

Back

Ecosystem

Front

What does the kinetic energy of a marble just before impact relate to in terms of crater depth?

Back

It is proportional to the depth of the crater it forms.

Front

What is the definition of an ecosystem?

Back

A biological community of interacting organisms and their physical environment.

Front

What is the role of nutrients in aquatic ecosystems?

Back

Nutrients support the growth of algae and aquatic plants.

Front

What is the difference between independent and dependent variables?

Back

Independent variables are manipulated, while dependent variables are measured.

Front

What is the impact of excessive algae growth in water bodies?

Back

It decreases oxygen levels, harming aquatic life.

Front

What is a control in an experiment?

Back

A control is a standard for comparison that is not changed.