The scientists need a material that is a superconductor at temperatures greater than 273 k. which of the following would be best for the scientists to do next?

a.) they should repeat the experiment with a material that is known to be a superconductor only at temperatures below 4 k.
b.) they should repeat the experiment with a modified form of material b.
c.) they should repeat the experiment using the same materials at a higher temperature.
d.) they should repeat the experiment with the same substances to try to obtain different results.

Which class of molecules contains the amino group, nh2 (a) sugars (b) water (c) proteins (d) hydrocarbons

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.

The allele for curly hair is incompletely dominant. if a mother is homozygous for curly hair and the father is homozygous for straight hair, what percentage of the offspring will exhibit characteristics of both parents? 25 percent 50 percent 75 percent 100 percent