Gas exchange in animals occurs in the lung cells where oxygen moves from high to low concentration. What part of the cell is responsible for the process of gas exchange? *

Cell membrane

Nucleus

Cell wall

Ribosomes

A plants can have either brown b. or red b. leaves. Brown is the dominant trait is a plane as a genotype Bb which best describes the plant. a. Homozygous with brown leaves. b. Heterozygous with red leaves c. Homozygous with red leaves. d.

Which phrase best describes a human community in a rural area? A. Small and low density B. Small and high density C. Large and high density

From earliest to most recent, what is the correct order in which organisms appear in the fossil record? a. dinosaurs, invertebrates, reptiles, mammals b. invertebrates, amphibians, dinosaurs, mammals c.

How 2 is the correct answer? I need to know the explanation

What do a dinosaur and a tree have in common

Steps that occur in the scientific process are listed below. What is the correct order in which the steps should occur? (put them in order) A. Conduct an experiment. B. Draw a conclusion. C. Make an observation. D. Analyze the results. E.

What are the names of the two phases of photosynthesis?

Patellar responses often strengthen with diversion how do you explain this observation

Why is ethical behavior particularly important in the agriculture industry?

What are the basic building blocks of living organisms