Weather patterns on earth may be . •Changing the planet's elliptical orbit •Causing more meteor showers
•Causing the rock cycle to slow down
•Changing the planet's shape

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm

Abird flies by moving its wings up and down. which two systems are most directly responsible for the movement of a bird's wings? a. skeletal and muscular systems b. respiratory and muscular systems c. skeletal and digestive systems d. respiratory and digestive systems