Fertilization between the haploid gametes forms a diploid zygote. The zygote will undergo many rounds of mitosis and give rise to a diploid multicellular plant called a sporophyte. ... The spores will then develop into the multicellular gametophytes.
https://www.khanacademy.org/science/biology/cellular-molecular.../sexual-life-cycles
Khan academy is a great learning tool for subjects you don't understand of if you need to go back and learn something
Only the last one provides an actual evidence of having a common ancestor. The rest can be a result of living in a similar environments that makes life easier. For example, many species live next to water, as water provides more fertile ground for plants, and they might have similar behaviors (searching for water) but they might not be closely related.
so the correct answer is D.
C. by observing them in their habitats
Ex: The Galapagos Islands. Darwin went their to study the flora and fauna in their natural habitat.
Obedience, because the dog should know when to attack and when to call down
Its the color of crystals formed depends on the speed of evaporation
