Vernon is studying the population of deer in a tract of forest. He gathers the following data.
Birth rate: -50 deerlyear
Death rate: -70 deerlyear
Which additional observation would support the conclusion that the deer population is NOT changing size from year to year, meaning that the
net population change is 0?
A
About 20 deer per year immigrate to the tract of forest.
B. About 20 deer per year emigrate from the tract of forest.
C. The average life span of a member of the deer population is 20 years.
D. If a deer survives its first year of life, its average life span is 20 years.

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

According to this food web which of the following would be considered primary consumers

Which locations on the map are low-pressure areas? a b c d e