"chlorophyll molecules are embedded in which part of the chloroplast? "

Each pair of clay balls represents two planetesimals. if each planetesimal is composed of the same material and is separated he the same distance, which pair experiences the frayed gravitational attraction?

The fascicles of the deltoid are ; the fascicles of the pectoralis parallel; bipennate fusiform; unipennate multipennate; triangular bipennate; fusiform

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.