Problem: OPTIONS:
- nervous and lymphatic
- digestive and respiratory
- endocrine and renal
- respiratory and circulatory
Q: Q: The anatomical arrangement of capillaries and alveoli emphasizes the structural and functional relationship of what systems? A:
Answer: respiratory and circulatory

Problem:OPTIONS:
- lungs
- pores
- diaphragm
- gills

Q: What do aquatic arthropods use to exchange gases? A:
****
A: gills

Q: Hundreds of organelles called myofibrils, made up of two types of protein filaments, are contained in each fiber of what? A:
OPTIONS:
- bone
- hair
- cartilage
- muscle
muscle

Q: What is defined as an organism in the earliest stages of development? A:
OPTIONS:
- a zygote
- a gamete
- an nucleus
- an embryo

Answer: an embryo

Question: Q: Which gas do people exhale during each breath? A:
OPTIONS:
- carbon monoxide
- nitrogen
- oxygen
- carbon dioxide
Answer: carbon dioxide

input: OPTIONS:
- polarized and focal
- scope and focus
- concave and convex
- objective and eyepiece Now, answer this question: Q: What two lenses comprise a compound microscope? A:
A:
output:
objective and eyepiece