Science Practice Test with Rationalization 12

Soil is considered an ecosystem. Which of the following supports the statement?

Why are green plants considered as autotrophs?

Of the following organisms listed below, which one is considered heterotrophic?

An ecosystem that suffered ecological imbalance can recover naturally through _____.

Which of the following shows the transfer of food between all life forms?

A simple food chain consists of the following: The cob worm that feeds on the corn is eaten by the small bird and this bird is then eaten by the hawk. What will happen to the organisms involved in the food chain if the worm is killed by pesticide?

One environmental activity that may reduce water pollution is the __________.

Global warming is an environmental problem being brought about by activities of man that change the quality of air. This may result to the following, except __________.

Of the following listed below, which one is considered the most disadvantageous source of energy since it gives detrimental effect on the population’s food supply?

The major concern about global warming arises from increased concentration of ______.