The expected remaining lifespan of the sun is thought to be about how many years?
a) 7 million years
b)7 billion years
c)77 million years
d)77 billion years

b) 7 billion years

Explanation:

Hi, the sun, like all stars, has a lifespan, characterized by a formation, main sequence, and eventual death

This lifespan began roughly 4.6 billion years ago, and will continue for about another 7 billion years, when it will deplete its supply of hydrogen, helium, and collapse into a white dwarf.

So, the Sun is about half way through the most stable part of its life.

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1. a host loses nutrients to a parasite

2. a parasite only benefits when the host is alive (cause if the host dies the parasite dies with it )

3. producers to consumers

4. the tapeworm is a parasite

5. they convert energy from the sun (photosynthesis)

6. sunflower-robin (i think im 80% sure)

7. producer

8. consumer

9. prey

10. fresh water snails ( cause the green algea is the producer and the snails are the primary consumers and the small fish consumer so is the big fish)