An egg requires warmth to survive, and inside of the eggs, the embryos grow by shedding their inelastic shell or exoskeleton. Given these facts, what inside of a shell requires warmth to survive among the following options: - oysters - abalone - bullfrogs - sand - beads - water - embryos - Echinoids
embryos

Most plants continue to grow throughout their lives, and plants require nutrients for growth. Given these facts, what is required for growth through life among the following options: - Energy - Energy. - sunlight - heat energy - nutrients - oxygen - incubation - soil
nutrients

An animal requires energy to move, and when an animal moves, it burns energy. Given these facts, what allows for movement in animals among the following options: - the digestive system - an external framework - energizing crystals - Veins and arteries. - spinning wheels - burning energy - arteries - changing tires
burning energy

Hair is a fiber that is found only in mammals, and all humans are mammals. Given these facts, what has hair among the following options: - animals - humans - h2o - snakes - fish - goats - fur seals - bears
humans