Cobalt 60 used to infertile
flies in farm. is it a
right choice?

The answer is no

Explanation:

Cobalt 60 is a radioactive substance that remains in the environment for up to 6 years, is normally used in medical cancer treatments, but is highly toxic to people.

Exposure of Cobalto 60 for a few minutes can cause death.

The current health authorities are questioning the use of this material in this type of home use, the recommendations are to refrain from using it.

I hope its help you.

the answer is; comparing the frequency of collisions with and without the device

this makes the anti-collision system an independent variable and the collisions a dependent variable. if there are fewer collisions with an anti-collision system that without, then it can be stated that the system is a success. essentially, collisions under an anti-collision system are compared with the frequency of collisions by cars with the human drivers.

for a different answer set the answer would be because the oxygen in the water had depleted (apex)