Ateacher shows students a string of beads as a model of a chromosome and genes. what do the beads represent explain?

In what for do plants utilize nitrogen? why do they need nitrogen?

Which image shows labeled organelles that are present only in plant cells?

1. fold your hands together so your thumbs cross over ,and look at your thumbs. which thumb feels most "comfortable" on top is actually controlled by a gene. the left thumb folding over the right thumb is a domi