1) Hybridization
2) Differential resource exploitation
3) Sexual selection
4) Allopolyploidy
Basically all of the above.
Polyploidy
While cadmium has been shown to cause several types of cancer, it has not been associated with bone cancers or spinal cancers.
They don't. They've actually been shown to relieve stress.
Advil, (just a brand name for ibuprofen) has been shown to cause constipation as an adverse effect in some cases.
cause various symptoms of overdosing
Yes. Long term use of marijuana has been shown to cause anxiety.
Speciation
Tenex is a blood pressure medicine and has not been shown to cause weight loss. Just the opposite, it has been known to cause weight gain.
: No, it should not. It should cause you to be more focused. Keep in mind that Strattera has been shown to cause depression and suicidal thoughts in children.
Headphones have not been shown to cause cancer
There are many. One example is Accutane, an acne medication. It has been shown to cause fetal deformities, and possible miscarriage.
Plants, such as flowering plants like sunflowers and cotton, have often undergone sympatric speciation through polyploidy. This process involves the duplication of chromosomes within a single species, leading to the formation of new species that can coexist in the same geographic area. Polyploidy can facilitate rapid diversification and adaptation to new environments, contributing to the evolutionary success of certain plant lineages.