Independent variable: is the UV light exposure
Control group: people not exposed (sample b)
Dependent variable: skin cancer
Experimental group: (sample A)
Answer: A closed circulatory system and an excretory system consisting of tubular nephridia
Explanation:
MDMA is what came before ecstasy and had an amazing ability to boost productivity and help people work through difficult and deep emotional wounds that were too difficult to talk about when sober. therapists would give small amounts of MDMA to patients to help talking about trauma.
If you want a medical drug then colistin is a third wave antibiotic that kills off bacteria that would be far too strong to be killed with 1st or 2nd wave antis. colistin helps save peoples lives.
Answer:
All natural soils are heterogeneous mixtures because no two nature soil samples will have the precise proportions of its inherent components.
Explanation:
You didn’t state the investigation we need to apply the role of alcohol to