Answer:

Explanation:
÷
=
To change the ÷ sign to a × sign, swap the denominators and the numerators of the second fraction.
×
=
Directly multiply. Numerators with numerators and denominators with denominators.
I'm pretty sure the answer is D
Answer:
The 3 would be the following:
A
captive breeding of organisms
E
introduction of invasive species
restoration of degraded land
The answer would be Sputnik 1. This was a Russian space probe launched during the Space Race between the Soviet Union and the United States.