Please help. I will give brainliest but please be sure of your answer thanks <3

I am between 3 and 4 but im gonna go with number 4!

Explanation:

if im wrong im so sry but hope this helps

Trace fossil is the type of fossil that can help us understand an organism's activity during its lifetime.

Trace fossils are fossils that provide information about the biological activities and behaviors of past organisms. Trace fossils indicate how organisms behaved including what they ate during their lifetime. Examples of trace fossils are tracks and trails, borings, burrows (bioerosion), gastroliths and coprolites (fossilized droppings).

nuclear weapons are hoaxes. many people believe they are real, though.

the system of checks and balances is very important to the us constitution. it makes sure that all three branches of government have limited power. that they do not have too much power. with this system they can limit the amount of power that each one has. that way no branch becomes too powerful.

an example of this is how the executive branch can veto bills from the legislative branch but the legislative branch can still override that veto. the name checks and balances come from the power for one branch to check the   power of another branch to make sure that everything is balanced between all three.

i hope this