Which phrase describes organisms that formed index fossils? are extinct

had soft parts

were generally large

lived in a narrow geographic area

the first one... are extinct

Explanation:

That's the one that was right

A.) Are extinct

Explanation:

I just took the quiz and got a 100%

The final temperature will be

Explanation:

To calculate the specific heat of substance during the reaction.

where,

q = heat absorbed =41840 J

c = specific heat =

m = mass of water  = 200 g

= final temperature =?

= initial temperature =

Now put all the given values in the above formula, we get:

Thus the final temperature will be