Naveed was sleeping, someone knocked at his door. At once he awoke & tried to open the lock. But couldn’t unlock in 1st attempt. What is this phenomenon called? A]
Fiber summation
B}
Tetanization
C}
Treppe
D}
1st few twithes are weak
E}
twitch summation

When analyzing tree rings, what do scientists assume a thin ring indicates?

In the diagram below, the northern hemisphere would be in what season at position a a. fall b. winter c. summer d. spring

Diego conducted an experiment to find out what kind of ball bounces the highest when dropped from a five-foot platform. he used a golf ball, a tennis ball, and a soccer ball. he dropped each ball from the balcony once. diego recorded his observations after each drop. what can diego do to best improve the reliability of his results? a) drop each ball from the platform three more times b) record his observations in more than one unit c) write at least two scientific questions after the experiment is complete d) share his results with other people who have done similar experiments you for the !