Which is the best definition of a phylogenetic tree? a table of classification that is based only on physical characteristics eight levels of taxonomic categories that are used to classify organisms a branching chart that depicts evolutionary relationship among organisms organisms organized based on structure and genetic comparisons

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight.which of these is the most likely effect on the ecosystem? a-an increase in biodiversity. b-an increase in immigration to the area. c-a decrease in available water. d-a decrease in plant growth.

Match the description of each organism to the appropriate category

The is an estimate of the fewest number of organisms a population needs to avoid extinction. this measurement will most if the number of offspring each female in the population produces increases. if the population's this measurement will most likely increase. 1 population density, minimum viable population, carrying capacity 2 decrease, be unaffected, increase 3 death rate increase, dead rate decrease