50 pts, give this lazy bum an easy 100 Analyze the following scenario in order to identify the important parts of an experiment

Josh wanted to find out if smokers could taste foods as well as non-smokers. Josh baked two dozen lemon cookies with one teaspoon of lemon extract, two dozen lemon cookies with ¼ teaspoon of lemon extract. He used one dozen of each concentration to test 12 smokers to determine if they could detect the difference in lemon flavoring. He did the same exact thing with 12 non-smokers. Each participant received one of each type of cookie.

Quick asap will give brainiest ! what best describes the same pattern of tides on earth throughout the day? neap tides spring tides semidiurnal tides nocturnal tides

Acell goes through cellular respiration and produces atp which it then uses to move a molecule across the cell membrane. how does the energy in the original glucose molecule change during this process? (2 points)

Astudy by solloch and et. al., in 2017, gives the map above which shows the frequency of alleles with a ccr5-delta32 mutations over 87 different countries. this mutation deletes the presence of a co-receptor (ccr5) on the outside of human t-cells (lymphocytes). some viruses, such as the one responsible for the black death and human immunodeficiency virus (hiv), require this receptor for attachment to host cells during the infection process. the black death was an epidemic that passed over northern europe during the 14th century killing nearly 60% of europeans. according to this information, which explanation best explains why northern europeans show a greater immunity for hiv than some other parts of the world?