Question

matching
the prefix a- in the word amoral means:
what does the word autograph most likely mean?
the prefix cardio- in cardiology refers to:
which word uses the prefix chloro-, meaning green?
the prefix eco- in the word ecology means:
the prefix pro- in proceed means:
which prefix would you use to create a word meaning the study of the heart?
what does automatic most likely mean?
something done by itself, without human control

Explanation:

1. The prefix "a -" often means "without", so "amoral" means without moral principles.
2. "Auto -" means self. An autograph is a signature one writes for oneself, typically of a famous person for a fan.
3. "Cardio -" in cardiology refers to the heart. Cardiology is the study of the heart.
4. Words with "chloro -" related to green could be "chlorophyll" which is the green - pigment in plants.
5. "Eco -" in ecology means environment or house (in the sense of the environment as a living space).
6. "Pro -" in "proceed" means forward.
7. To create a word meaning the study of the heart, the prefix "cardio -" is used.
8. "Auto -" in "automatic" means self - acting, so it means something done by itself, without human control.

Answer:

1. Without
2. A signature one writes for oneself
3. The heart
4. Chlorophyll (example)
5. Environment
6. Forward
7. Cardio -
8. Something done by itself, without human control