This diagram shows the count of different species of snakes in a sample taken from an ecosystem. each shape represents a unique species.
what can you conclude about the sample from this diagram?
a. the sample richness is 3.
b. the sample richness is 4.
c. the sample richness is 10.
d. the sample richness is 14.

Which of these serves as a reference for comparison during a scientific investigation? a)outcome variable (dependent variable) b) test variable (independent variable) c)control group d)hypothesis

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. there has been much debate about the classification of these creatures. some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards.the data equally support both cases. which statement best explains how to draw a cladogram that includes the rynchosaur? draw the cladogram for amphibians. draw the cladogram for reptiles. draw two cladograms, both showing the traits, and leave it as a hypothesis. draw two cladograms, both showing the traits, and have scientists vote

How does human environment effect the biosphere