*Question*
You are presented with the question "Since when have mushrooms been eaten?" and the following answer choices: - Medieval times - To keep their body heat. - Paleolithic times - it keeps an organism warm - the body's largest organ - The Great Depression - important habitats - Modern times Now knowing that humans have collected and grown mushrooms for food for thousands of years and humanity's use of mushrooms extends back to Paleolithic times, choose the best answer.
**Answer**
Paleolithic times

*Question*
You are presented with the question "what kind of heart do mollusks have?" and the following answer choices: - organ - epidermal - fossils - ligt - three - warmth - warm - simple Now knowing that mollusks have a circulatory system with one or two hearts that pump blood and mollusks have a simple heart, which pumps the blood throughout the body, choose the best answer.
**Answer**
simple

*Question*
You are presented with the question "Plants that cannot exhibit phototropism will what?" and the following answer choices: - blossom - die - kill - bloom - dead - grow - lack - harm Now knowing that plants exhibit phototropism, or growing toward a light source and without light, plants die, choose the best answer.
**Answer**
die

*Question*
You are presented with the question "What will be formed if a neutral atom loses an electron?" and the following answer choices: - nucleus - an object - calcite - electrically - leukemia - an anion - iron - coal Now knowing that if a neutral atom loses an electron then an atom with a negative charge will be formed and an anion is a negatively charged atom, choose the best answer.
**Answer**
an anion