Will give !asap! you!

which of the following options identify difficulties in using the linnaean classification system to create a phylogenetic tree?

select all that apply.

the amount of time elapsed between taxonomic levels is not necessarily the same everywhere on the tree.
linnaean taxa may be paraphyletic.
linnaean taxa are always monophyletic.
the branches are not calibrated with time.

a. population growth is decreasing

-2

+4

-10

-3

-8

-3

so the population decreased by 24 because 3+3+8+10+2=26-2=24.

hoped i !

explanation:

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.