You are presented with the question "What can be fatal?" and the following answer choices: - Electric devices - smoking cigarettes - smoking - magic - Good will - laughter - Some viruses - Pesticides Now knowing that some viruses can cause cancer and some cancers are fatal, choose the best answer.
Some viruses
You are presented with the question "What does almost all plant and animal life depend on?" and the following answer choices: - desert - disease - biological diversity - Sedimentary rock - absorb light energy - sunlight - ghosts - Chlorophyll Now knowing that carbon may be stored in sedimentary rock for millions of years and carbon is an essential element for almost all plant and animal life, choose the best answer.
Sedimentary rock
Q: You are presented with the question "What have special structures for penetrating a host?" and the following answer choices: - molds - elms - ferns - orchids - bats - gills - apples - amoeba Now knowing that fungi have special structures for penetrating a host and fungi include yeasts, molds, and fleshy fungi, choose the best answer.
A: molds
Question: You are presented with the question "What have humans collected and grown as food for thousands of years?" and the following answer choices: - sunlight - fungi - plants - rocks - fungus - salmon - ferns - poison Now knowing that humans have collected and grown mushrooms for food for thousands of years and mushrooms are also fungi, choose the best answer.
Answer: fungi
*Question*
You are presented with the question "Most animals with external skeletons and jointed legs are what?" and the following answer choices: - homogenous - spiders - animals - mechanical - strong - octopus - insects - scorpions Now knowing that most arthropods are insects and arthropods are animals with external skeletons and jointed legs, choose the best answer.
**Answer**
insects
*Question*
You are presented with the question "What is essential for cellular respiration?" and the following answer choices: - Veins and arteries. - kinetic energy - The atmosphere - Energy. - heat energy - Organic compounds - Chemical energy - flow of electrons Now knowing that oxygen is essential for cellular respiration for all aerobic organisms and besides nitrogen and oxygen, the atmosphere contains many, many other molecules in trace amounts, choose the best answer.
**Answer**
The atmosphere