/u/saad85's posts

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Nitrogen is the most important aspect of most fertilizer and it is highly competed for in some plant ecosystems, but nitrogen is the most common component in air. Why can't plants use nitrogen gas from the air?

1199 upvotes • r/askscience

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Eggs are a big investment for birds, so why do chickens lay unfertilized eggs? Why don't they 'hold on' to that investment until it's fertilized?

652 upvotes • r/askscience

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How do stars get 'eaten' by black holes? Why don't they just orbit?

7 upvotes • r/askscience

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When trying to build muscle, people often recommend eating lots of protein. Proteins are made of amino acids, so is it possible to get the same effect by just ingesting amino acid suppliments? Are there any advantages/disadvantages?

6 upvotes • r/askscience

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How do plants' immune systems work? Do they have something analogous to white blood cells?

5 upvotes • r/askscience

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A car sitting in Australia on a hot summer day is suddenly teleported to Siberia in the cold of winter. Do the tires go flat?

4 upvotes • r/askscience

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In which scenario would a human body absorb more nutrients and/or calories?

4 upvotes • r/askscience

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Do oceans (or sections of oceans) belong to certain continents? What about islands far away from main land?

1 upvotes • r/askscience

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What did ancient / prehistoric people find funny?

1 upvotes • r/AskHistorians

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Title	Upvotes	Subreddit	Mark as read	Favorited	Rating	Add to a list
Nitrogen is the most important aspect of most fertilizer and it is highly competed for in some plant ecosystems, but nitrogen is the most common component in air. Why can't plants use nitrogen gas from the air?	1199	askscience
Eggs are a big investment for birds, so why do chickens lay unfertilized eggs? Why don't they 'hold on' to that investment until it's fertilized?	652	askscience
How do stars get 'eaten' by black holes? Why don't they just orbit?	7	askscience
When trying to build muscle, people often recommend eating lots of protein. Proteins are made of amino acids, so is it possible to get the same effect by just ingesting amino acid suppliments? Are there any advantages/disadvantages?	6	askscience
How do plants' immune systems work? Do they have something analogous to white blood cells?	5	askscience
A car sitting in Australia on a hot summer day is suddenly teleported to Siberia in the cold of winter. Do the tires go flat?	4	askscience
In which scenario would a human body absorb more nutrients and/or calories?	4	askscience
Do oceans (or sections of oceans) belong to certain continents? What about islands far away from main land?	1	askscience
What did ancient / prehistoric people find funny?	1	AskHistorians