What two cells are involved in sexual reproduction ?

Sperm cells from the male organism, and egg cells from the female organism. They then combine to create an embryo through a procsess called "fertilization"

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