False, then the second one the answer is sweat glands
<span>Without variation, there is no difference between members of a population to be "selected for" in the first place. This is a basic tenet of natural selection. A new trait must arise in order to advance or decrease the fitness of the individual, and hence, its ability to pass on its genes.</span>
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.
Buy and use multipurpose cleaners.
Buy the least harmful product. Read labels.
Wipe up spills when they happen.
Hope this was Helpful! :)
Unicellular organisms are organisms that are made up of one cell only. This is usually the case for bacteria like Ecoli and otherwise known as prokaryotic cell. Multicellular organism are organisms that are made up of more than one cell and there are many such as humans, animals and plants aka eukaryotic cells. There are exceptions such as eukaryotic cells being unicellular such as amoebozoa and excavata. There are also exceptions in which prokaryotic cells can be multicellular such as yeast and amoeba.
