The following are all natural materials EXCEPT for:

Decomposers are important in the process of decay because:

Enzymes are called biological catalysts because they:

Which of the following would play an important part in a government′s efforts to increase consumption of locally produced food?

Herbicides are used to destroy:

In the equation, carbon monoxide + oxygen → carbon dioxide, a reactant is:

Osmosis is:

The speed of an ink-jet printer is measured by the number of __________ it can print.

Vaccination causes a person′s immune system to produce:

Choose the ONE underlined part A, B or C that is inappropriate. If the sentence is acceptable as it stands, choose D.

I formed the brilliant idea of climbing the fence and to hang from the top of the rail until the bull went away.

A balanced diet is one which:

Which one of the following statements about an ammeter is NOT true?

How many lines of symmetry does this shape have?

The gross profit of a firm is $3,600, bad debts $100, rent paid $120, rent prepaid $20, general expenses $80 and discount received $110. The net profit is

The electrical charges on a proton and an electron are:

The main taxonomic groups in order, starting with the largest, are:

A species of mouse has 32 chromosomes in its muscle cells.What will be the numbers of chromosomes in the mouse′s skin cells and sperm cells?

Mrs. Green is a dry goods merchant. Which of the following transactions would result in a debit to her Cash Account?

If x is an odd number, which of the following is also odd?

Instructions: Select the option A, B, C or D that BEST describe the sentence.

Traffic bottlenecks must be ironed out if we are to prevent giant traffic congestion.