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All life on earth is adapted to a day/night cycle. Further, all life on earth is ultimately dependent on plant life, and plant life is dependent on sunlight. Were no sunlight to reach earth due to thick ash clouds or something else obscuring sunlight, plants would die, herbivores would die and finally carnivores would die. There would be no food for humans to survive on, except for fungi which are not dependent on light.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agono because we need heat and light to live
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How is light helpful to humans?
light is very help ful to humans because humans need light to see dark and humans need light so they can do their work. that's all i think
Why is earth the brightest of all planets?
because it has humans in it and humans need light
What do humans need to live and grow?
Food
Why do humans need to breathe in oxygen?
In order to live.
What gas do humans need so they can live?
oxygen
What do humans need to survive space?
We can not live with out trees
Do humans need meet to live?
humans don't need meat to live they can survive off of plants but would be very weak. meat gives you the protein that your body needs.
What do humans need to be alive?
Water, Food, Light, Oxygen and Sex
Where do humans get the carbon dioxide you need to live?
You don't need carbon dioxide to live...I think you're thinking of oxygen.
Do humans need both lungs to live?
No you need a heart and a brain too...
Does wrigglers need light to live?
no they dont
Do plants need light to live?
yes they do just like me need light otherwise they will die. Mainly plants need space, light and water
