Me with this 60 points,5-star rating, an and marked as branliest.

robert was told by a friend that if you place unused batteries in a refrigerator, they would last longer. he wanted to see is this was true. he hypothesized that if the temperature is colder, then the battery power would last longer. robert brought some batteries. he placed 1 of them in the refrigerator,1 on his desk, and 1 on a heating pod. one week later, robert tested 3 batteries with a battery tester. he repeated the test 3 more times for a total of 4 weeks. he used the same size batteries.

independed variable:

dependent variable:

constants:

control:

Tara sees a commercial for a brand of pills that promise to boost energy and people perform better in work and school. as people in the commercial talk about how much better they feel when taking the pill, tara notices a message on the bottom of the screen that reads, "this pill is not approved by doctors and has not been tested in controlled experiments." what is the best conclusion that tara should make about the commercial? it is making scientific claims based on subjective observations. it is making scientific claims based on opinions instead of pseudoscientific facts. it is making pseudoscientific claims based on objective observations. it is making pseudoscientific claims based on opinions instead of scientific facts.

How does friction with the atmosphere affect the speed of an artificial satellite

Cladistics is a way of classifying organisms by examining the characteristics of their ancestors and descendants and depicting the relationships in a cladogram. which of the following best describes a challenge in classifying organisms this way? a. there are millions of species on earth, and a cladogram is not a practical means for classifying all of them. b. it is impossible to tell which organisms are most closely related to each other using a cladogram. c. cladograms are detail-oriented and do not provide a useful understanding of evolutionary relationships. d. there is a limited number of ways to organize the information, so most cladograms end up looking very similar.