Answer: passive transport moves down a concentration gradient
Explanation:
Energy-requiring transport is not passive
Answer:
cell wall provides protection and structural support
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical chemical energy that can later be released to fuel the organisms activities.
<span>High mass stars are the largest, hottest and brightest while the low mass stars are the smallest, coolest and dimmest. High mass stars use their hydrogen fuel rapidly and have short lives while the low mass stars use hydrogen fuel slowly and have long lives. High mass stars pass through the Red Supergiant stage before dying in supernovae explosions while the low mass stars simply die by burning up their fuel to leave behind the white dwarfs which themselves cool and contract further to black dwarfs.
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