3 Pilih satu perkembangan dalam bidang biologi dan bincangkan sumbangan bidang
tersebut kepada manusia.

Which direction does the energy flow in this energy pyramid ?

Which are evidence of seafloor spreading? check all that apply. molten material magnetic stripes continent material drilled core samples ocean water samples

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled