Q: What does the slope of a position-time graph represent? Choices: - trajectory - direction - acceleration - velocity A:
velocity

(Question)
Q: How metalloids behave in chemical interactions with other elements depends mainly on the number of what, in the outer energy level of their atoms? Choices: - protons - positrons - neutrons - electrons A:
(Answer)
electrons

Ques: Q: What is the year cycle that sunspots occur? Choices: - 12 - 15 - 22 - 11 A:
Ans: 11

(Q).
Q: What are groups of young stars loosely held together by gravity called? Choices: - constellations - galaxies - closed clusters - open clusters A:
(A).
open clusters

Ques:Q: The e. coli chromosome, like many other bacterial chromosomes, is what shape? Choices: - oval - square - triangular - circular A:

Ans:circular

Ques:Q: What is necessary for organisms to survive in the deepest parts of the ocean? Choices: - reflexes - mutation - competition - adaptations A:

Ans:
adaptations