In an eight-cell embryo of an organism, the cells of the upper tier are aligned over the cells of the lower tier at a slight angle. which organism is it likely to be? the choices are the following: earthworm. . starfish. . sea cucumber. . sea urchin.

Which level of consumer had access to the smallest apply of energy

Greenthe fossil record is the history of life recorded byhuman observationgod.climatologists.remains of the past.

Drag each tile to the correct box. arrange the phases of mitosis in the correct order. 1 (condensation of chromosomes) 2 (separation of chromosomes) 3 (formation of spindle fibers) 4 (alignment of chromosomes in the center of the cell) 5 (pinching of the cell membrane)