You are presented with the question "What are the structural and functional units of the organ that filters blood?" and the following answer choices: - lungs - nephrons - humans - pancreas - eardrum - alveoli - epidermal - organ Now knowing that nephrons are the structural and functional units of the kidneys and blood is filtered in the kidney, choose the best answer.
nephrons
You are presented with the question "How is sandstone formed?" and the following answer choices: - less water - In sediment - rainfall - calcite - growth - Water expanding - Deposition - movement Now knowing that sedimentary rocks are formed by deposition and sedimentary Rocks One of the commonest sedimentary rocks is sandstone, choose the best answer.
Deposition
Q: You are presented with the question "The Himalayas were formed by what?" and the following answer choices: - earthquakes - snowfall - chemical changes - movement - fires - graptolites - rain - calcite Now knowing that the Himalayas were formed by rock folding and an earthquake may cause folding of the layers, choose the best answer.
A: earthquakes
Question: You are presented with the question "what have a positive impact on a human's health?" and the following answer choices: - sweating - nutrients - tuna - animals - hormones - food - clams - sports Now knowing that exercise has a positive impact on a human 's health and sports is a good form of exercise, choose the best answer.
Answer: sports
*Question*
You are presented with the question "What is a cause of fog?" and the following answer choices: - evaporation - heating liquids - condensation - transpiration - scattered light - Pollution - Water expanding - droplets of lemonade Now knowing that condensation causes clouds to form and fog is a cloud that forms on the ground, choose the best answer.
**Answer**
condensation
*Question*
You are presented with the question "What can polar bears do to generate heat?" and the following answer choices: - make fire - eat ice - stay warm - nothing - fur - motors - shiver - sweating Now knowing that mammals can also generate little bursts of heat by shivering and polar bears are mammals, choose the best answer.
**Answer**
shiver