If embryos inside of a shell require warmth to survive, then what inside of a shell requires warmth to survive? Answer choices: - oysters - abalone - bullfrogs - sand - beads - water - embryos - Echinoids
embryos

If nutrients are required for growth throughout their lives, then what is required for growth through life? Answer choices: - Energy - Energy. - sunlight - heat energy - nutrients - oxygen - incubation - soil
nutrients

If burning energy is what allows for movement in animals, then what allows for movement in animals? Answer choices: - the digestive system - an external framework - energizing crystals - Veins and arteries. - spinning wheels - burning energy - arteries - changing tires
burning energy

If humans have hair, then what has hair? Answer choices: - animals - humans - h2o - snakes - fish - goats - fur seals - bears
humans