The mineral with a hardness of 10 is _______________.

Of the following, _______________ is not a good insulator because of its physical properties.

An area occupied and defended by an animal or group of animals is a _________________________________.

__________________________ is an example of the beneficial association between coral and algae.

After the last ice age, stranded ice blocks left behind by the continental glacier melted and formed

Tiny hair-like structures that sweep mucus from the nose into the throat are called __________________ .

____________________ tissue can contract, or shorten.

The moon’s light comes from ______________.

The practice of raising fish and other water-dwelling organisms for food is called _____________________________.

Too _________________ in muscle cells causes lactic-acid fermentation

A polar solvent will most likely dissolve __________________________.

At temperatures below freezing, a nimbostratus cloud is likely to produce _______________________ .

When using the periodic chart, the ____________________ gives the number of protons in a given element.

The union of sperm cell and egg cell is called _________________.

A large rock is added to a graduated cylinder containing 70 mL of water, raising the lever to 100 mL of water. What is the volume of the rock?

The honeybee “dance” communicates the _____________________.

Most molecules have more than one type of ______________.

A change in an organism’s surroundings that causes it to react is called _______________________.

Because human blood has a pH between 7.38 and 7.42, it is considered to be __________________.

The total amount of water on Earth _______________.

Most animals get the nitrogen they need by ______________.

Convection takes place because _______________.

Rods and cones are in the part of the eye called the _________________.

Of the following, which contains a large amount of carbohydrates?

Blood vessels that direct blood away from the heart are ______________________.

A covalent bond is called ________________ if the atoms equally share one or more pairs of electrons.

An imaginary line that circles the Earth halfway between the North and South Poles is the ________________.

______________ is usually not a reliable indicator of a mineral’s identity because of weathering and impurities.

Botanists study_____________________.

A device that can convert chemical energy into electrical energy is a_____________________.

The property of an object that makes it sink or float in water is called its ____________________.

A fissure is __________________.

If a compound is organic, it contains the element _______________.

Free-swimming ocean organisms such as sharks, squid, and other kinds of fishes are classifies as ______________________.

The largest artery in the body is called the ________________________.

All the different populations that live together in an area make up a/an ___________________.

Vultures, which feed on the bodies of dead organisms, are _______________.

The biome which receives less that 25 centimeters of precipitation a year is the ___________________.

Electric power is expressed in _______________.

The type of stress that forms fault-block mountains is ______________.

Potential energy is the energy __________________.

A/An______________ is the name for a sudden, violent eruption of plasma from the chromospheres that lasts for a long time.

In a cross section of soil, the B horizon consists of _____________.

Ponds and rivers are two types ___________________ of biomes.

When a wave moves in the direction of a disturbance, it is called a _______________________ wave.

The spaces in bone contain a soft connective tissue called ________________.

A wave that is a combination of longitudinal and transverse waves is a ______________ wave.

Farsightedness occurs when the lens focuses the light _________________.

The accumulation of stress along the boundaries of lithospheric plates results in which of these?