Answer:
A natural disaster that affects a small number of organisms.
Step-by-step explanation:
A natural disaster that affects a small number of organisms since a natural disaster is a sudden and unpredictable for the most part. Due to this, animals don't have time to adapt and this will not affect the evolution process of those species since they are likely to die within a short period of time after the calamity occurs. They will not have enough time to save their own lives so can you expect them to evolve and grow wings to fly away?
Answer:
20/25
Step-by-step explanation:
divide the denominators
25/5=5
multiply the numerator
4*5=20
Line 1 and line 4 are parallel
Step-by-step explanation:
Two lines are said to be parallel if they have same slope.
In order to compare the lines given, we have to write them all in the same form, and then compare their slopes.
Line 1:

Applying distributive property,

Line 2:

Line 3:

Applying distributive property,

Line 4:

re-arranging,

Now we have rewritten all the lines in the form
, where m is the slope. By comparing the values of m, we see:

Therefore, the lines which are parallel are line 1 and line 4.
Learn more about parallel and perpendicular lines:
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