Kalie's teacher has given her a sample that contains a mixture of salt, sand, and iron fillings. She is instructed to separate the mixture into the three individual components. What would be the best physical property to use on for the first step in separating the mixture? *
1 point
density
electrical conductivity
magnetism
melting point

Modern sea star larvae resemble some primitive vertebrate larvae. this similarity may suggest that primitive vertebrates

After a signal is transmitted from the eyes through the optic nerve, which part of the brain processes the visual information? a. the limbic lobe b. the occipital lobe c. the frontal lobe d. the temporal lobe

What is the definition of genes? a. small rna chains that transfer a specific amino acid to a growing polypeptide chain at the ribosomal site of protein synthesis during translation b. sections of dna a cell copies as rna strands to make specific proteins during transcription and translation c. molecules of rna encoding a chemical blueprint for a protein product