You are presented with the question "Frogs have a _-chambered heart." and the following answer choices: - alveoli - organ - ovaries - oxygen - edible - three - nektar - CO 2 Now knowing that amphibians have a relatively complex circulatory system with a three-chambered heart and all frogs are amphibians, choose the best answer.
three

You are presented with the question "what does the sun attract?" and the following answer choices: - galaxies - planets - asteroids - honeybees - flowers - animals - eukyarotes - moon Now knowing that gravity pulls objects towards planets and gravity attracts the planets to the sun, choose the best answer.
planets

You are presented with the question "What do sperm penetrate?" and the following answer choices: - pollen - eggs - seeds - cells - plants - chromosomes - mines - skin Now knowing that fertilization occurs when a sperm and an egg fuse and fertilization is the penetration of the egg by a sperm, choose the best answer.
eggs

You are presented with the question "Sporangia produce spores that are what?" and the following answer choices: - dense - haploid - revolving - seeds - grow - white - infected - fertile Now knowing that sporangia produce spores that develop into tiny, heart-shaped gametophytes and all gametophytes are haploid, choose the best answer.
haploid