Which of the following bestdescribe magnetic forces?

a. opposite poles repel

b. like poles attract

c. opposite poles attract

Sea glass is broken glass that is worn smooth in the ocean and washed up on beaches. Determine whether the underlined group of words is a phrase or a clause, then determine if it is essential or nonessential. A. phrase, nonessential B.

A segment of dna has the following sequence ttaggcc. which seguence of bases would be found on the complementary strand of mrna

The science of using treevtings to determine absolute age is called

Which of these do plants need for respiration A. oxygen and sugar B. carbon dioxide and water C. water and sugar D. water and oxygen

Marissa blows up balloons for a party. She decides how big or small to make each balloon. Why does the air she blows into each balloon take up all the space inside the balloon? A.

The tundra biome has extremely cold temperatures during much of the year and a hard sublayer of permanently frozen soil called permafrost. Which of the following adaptations would plants in the tundra most likely have? A.

When plants of a particular species are growing too close to each other, crowding may eventually lead to mortality, known as self-thinning. this type of mortality is density-dependent. oscillating. exponential. density-independent. random?

the plant can either have a dominant allele or a recessive allele what would be a reason that is not a hardy weinberg equilibrium

What does DNA not contain?

Why are elements and compounds classified as pure substances?