Can someone see if these are right . correct form of then underline verb. in 1960 american scientists raise a serious concern . raising. raised. have raised < my choice. no change. her rolls always rise properly. risen. raised < my choice. rised. no change

The correct conjugation to the verbs is:

Sentence 1: Raised

Sentence 2: Rise

Explanation:

The first sentence uses a time expression that is referring to the past " In 1960" reason why is necessary to follow a simple past structure in the sentence, the correct sentence is "In 1960 American scientists RAISED a serious concern", the keyword for the second sentence is the frequency adverb "always", these words are used to demonstrate routinary activities, therefore the sentence has to follow a simple present structure, then the correct sentence is "Her rolls always RISE properly."

to inform readers about the ways young people improve the world.

nominative