You are presented with the question "A working refrigerator is good protection from what?" and the following answer choices: - Electric devices - plastic - Abnormal cell growth - darkness - Temperature changing - a pathogens - air, light and heat - cold Now knowing that arefrigerator is used for keeping food fresh for a long period of time and air, heat and light cause dried food to spoil, choose the best answer.
air, light and heat

You are presented with the question "what converts carbon dioxide, water, and solar energy into carbohydrates for themselves?" and the following answer choices: - circulatory system - plants - it needs them - aerobic capacity - amphibians - green plants - peachleaf willow - Organic compounds Now knowing that photosynthesis means producers convert from carbon dioxide, water, and solar energy into carbohydrates for themselves and photosynthesis is the chemical change that produces food and oxygen in green plants, choose the best answer.
green plants

You are presented with the question "What changes rock into gneiss?" and the following answer choices: - weak heat and low pressure - The bending of a ray of light - extreme cold and pressure - heat is produced - movement of tectonic plates - tectonic plates being pushed together - extreme heat and pressure - extreme heat and no pressure Now knowing that extreme heat and pressure change rock into metamorphic rock and gneiss Rocks Gneiss Rocks Gneiss rocks are metamorphic, choose the best answer.
extreme heat and pressure

You are presented with the question "Black objects" and the following answer choices: - flow of electrons - threatened - killing insects - It gets heated up - interact - an electron microscope - They may not survive. - absorb sunlight Now knowing that if an object is black then that object absorbs all visible light and sunlight is the source of light in nature, choose the best answer.
absorb sunlight