NOUN 1
NOUN/ADJ 2
VERB 1
VERB 2
MIX
150

Protecting the natural ________ is important for plants, animals, and people.

environment

150

Rain covered the car’s ________, making it hard to see.

windshield

150

Do not ________ the speed limit while driving.

exceed

150

Water will ________ when it is heated to a high temperature.

vaporize

150

Many renewable energy sources, ________, solar and wind power, reduce pollution.

for instance

250

________ is the force that makes objects fall toward the ground.

gravity

250

Rain, snow, and hail are all forms of ________.

precipitation

250

Animals must ________ to their environment in order to survive.

adapt

250

The manager promised to ________ the cause of the problem.

look into

250

This road is dangerous, ________ during winter.

especially

350

Drinking water in ________ can still cause health problems.

excess

350

The soil needs enough ________ for crops to grow well.

moisture

350

Dust can ________ on shelves if they are not cleaned regularly.

accumulate

350

Please ________ the empty bottle in the recycling bin.

discard

350

With enough practice, you will ________ improve your skills.

eventually

450

Healthy ________ is necessary for farming and gardening.

soil

450

The report was based on careful ________ research and data.

scientific

450

Sugar will ________ quickly when stirred into hot tea.

dissolve

450

Water vapor will ________ into droplets on a cold surface.

condense

450

You need experience ________ to applying for the job.

prior

500

The city stores drinking water in a large ________.

reservoir

500

One basic scientific ________ is that energy cannot be destroyed.

principle

500

Water can ________ the ground after heavy rain.

penetrate

500

Heavy rain can ________ the soil completely.

saturate

500

________ use of chemicals can harm the environment.

excessive

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