1. Floating organisms that drift with the ocean current and form the base of many food chains are known as plankton
seaweed
jellyfish
algae
squid

2. percent of marine life lives in the upper zone of the ocean that receives sunlight.
75
90
40
80
50

Consider the skeleton. which skeletal system is represented by the shaded portion of the skeleton? spongy skeleton compact skeleton axial skeleton appendicular skeleton

Which component in a graph indicates an independent factor? a. y-axis b. x-axis c. scale

In trying to determine whether dna or protein is the genetic material, hershey and chase made use of which of the following facts? a) dna contains sulfur, whereas protein does not. b) dna contains phosphorus, whereas protein does not. c) dna contains nitrogen, whereas protein does not. d) dna contains purines, whereas protein includes pyrimidines.