1) What is a body organs a) lungs b) mucles c) ER 2) What is the power house of the cell a) Nucleus b) cell wall c) mitochondia 3) What is a cell wall a) a stiff strucure in a plant cell b) the power house c) popcorn 4) What is the largest organ in the human body? a) Skin b) Heart 5) What is the process of breaking down food into smaller molecules called? a) Lymphatic system b) Digestion 6) What gas do humans breathe in? a) Oxygen b) Carbon dioxide 7) Which body system supports the body and protects organs? a) Digestion b) Skeletal system 8) What is the force that causes objects to sink in water? a) Buoyancy b) Density 9) What is the closest planet to the Sun? a) Mercury b) Earth 10) What is the largest planet in the solar system? a) Earth b) Jupiter 11) What is the hottest planet in the solar system? a) Venus b) Jupiter 12) Which biome is known for its tall trees, high rainfall, and warm temperatures? a) Rainforest b) Desert 13) Which biome is found in regions with hot, dry climates, and is characterized by its cacti, succulents, and desert-adapted animals such as camels and rattlesnakes? a) Desert b) Rainforest 14) What type of consumer eats only plants? a) Consumer b) Herbivore 15) What is the term for organisms that break down dead plants and animals? a) Decomposers b) Herbivore 16) What type of consumer eats only other animals? a) Consumer b) Carnivore 17) What is the basic unit of life? a) Cell b) Skin 18) What is the part of the cell responsible for storing genetic information called? a) Nucleus b) DNA 19) What gas do humans breathe out? a) Oxygen b) Carbon dioxide 20) What force keeps objects on Earth's surface? a) Density b) Gravity

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