When a scientific experiment is carried out in a controlled setting, all variables are kept the same except for the variable

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.

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.