They used animals to study body functions. Hope this helps!!
Don’t know if this is what you want but “Cuba” and “Fidel Castro” should be capitalized.
<span>Enjoying the warmth of the sun, we ate our picnic next to the gently moving stream.</span>
Answering say it’s person vs self :
Explanation:I say this because Casey struggles to decide whether or not he should tell his mom or blame it on the family dog.