PLEASEEE HELP SCIENCE A cold front forms when cold, dense air moves under warm, less dense air, as shown in the following illustration. Cooler weather usually follows a cold front. Cold fronts often bring other weather
changes.

Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Select the word from the list that best fits the definition the nuclear family into which a person is born or adopted.

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years