Choose all the answers that apply. chromosomes () are tight coils of dna () are carried on genes () always occur in pairs ()can be analyzed in a karyotype () carry thousands of genes

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

Number and variety of living organism; includes genetic, species, and ecological types

Which of the following terms describes all of the non-living components of an ecosystem