In which does alcoholic fermentation occur? lactic acid

plant cells

muscle cells

yeast

In addition to seeds, which of the following characteristics are unique to the seed-producing plants? a) sporopollenin b) lignin present in cell walls c) pollen d) use of air currents as a dispersal agent e) megaphylls

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm