Alkenes and alkynes are called unsaturated compounds because . Group of answer choices they have fewer hydrogen atoms attached to the carbon chain than alkanes they have more hydrogen atoms attached to the carbon chain than alkanes they have the maximum number of hydrogen atoms attached to each carbon in the compound they have fewer carbon atoms than alkanes they have more carbon atoms than alkanes

i'm assuming that the correct answer is indeed the first one/ "a"..

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".