Which type of plant produces a seed without a flower

When the cell concentrates potassium within, against the natural tendency of matter, it is performing a.passive diffusion b.facilitated diffusion c.active transport d.pinocytosis

In the diagram below, which organelle is a ribosome, which combines amino acids and produces proteins? оооо

Which of these is not an obstical to the future of space exploration? fundingresearch ideas technologytime