Penicillin is the only type of antibiotic in use today?

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint

producers: apple trees, potatoes, carrots, grains, acorns, cabbage, grass, corn, lettuce

consumers: deer, mice, rabbits, chickens, squirrels, horses, worms, cows

predators: eagles, frogs, wolves, owls

plato users:

d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.