8th grade Bio placement Assessment 2021

The largest animals usually provide the energy for smaller

animals and for plants in a given ecosystem.

The sun's energy is made available to an ecosystem by the

plants in the ecosystem.

The energy for living plants and animals in an ecosystem comes

mainly from dead animals, which are broken down by

decomposers.

In an ecosystem, the smaller organisms require more energy

than the larger organisms.

The number of prey will decrease and the amount of

vegetation will increase.

The number of prey will increase and the amount of

vegetation will decrease.

The number of prey will decrease and the amount of

vegetation will decrease

The number of prey will stay almost the same and the

amount of vegetation will increase.

An automobile moves because of the transformation of one energy

form to another form. Which of the sequences below illustrates this

transformation?

chemical-heat-mechanical

mechanical-heat-chemical

chemical-mechanical-heat

heat-mechanical-chemical

dependent variable

control

independent variable

controlling factor