A physical change means that none of the atoms or chemical bonds have been changed inside of something. Therefore, if you make a physical change, you should be able to revert it back. That means that the answer to this question is "The changed substance retains its unique properties." because it is the only answer choice where nothing major is being changed. The rest of the answer choices indicate that once changed, it isn't able to be changed back.
Because carry out all the functions in the human body necessary for living. Proteins make up hormones that are required for living. Insulin - responsible for stabilising blood sugar. Haemoglobin - responsible for carrying oxygen around the body. Melatonin - responsible for helping us get to sleep. Adrenalin - responsible for the flight-fight-freeze response. There are many more but here are just a few.
Answer: 50% will be purple
There’s a 50% chance the genes will be heter*zygous (Pp, purple flower) and 50% chance they will be hom*zygous recessive (pp, white flower)
Punnet square drawing attached
you gotta eat a b**ty flake
