Which were the earliest oxygen-producing life-forms? a. cyanobacteria. b. seaweed. c. dinosaurs. d. ferns.

Some plants rely on the wind to reproduce an example is it’s important for plants to use the forces of nature to reproduce because 1. 1a white tuft of dandelion seeds 2a spiked burrs surrounding seeds 3a hard shell on a walnut? 2. 1b require pollination to reproduce 2b reproduce only asexually 3b cannot move about freely?

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

What drives an advertising campaign?