Which of the following distinguishes lymphatic vessels from veins? distinguishes lymphatic vessels from veins?
-lymphatics have valves, while veins do not.
-lymphatics lack the three tunics present in veins.
-lymphatics transport fluids toward the heart.
-permeability of the walls

they absorb it i think

not sure

you

more words for this could be abiotic and biotic

abiotic: living organisms within an ecosystem

biotic: non-living organisms within an ecosystem

which

what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements