Mutations are essential for evolution to occur, and mutations are changes in the DNA sequence. Given these facts, what is essential for evolution to occur among the following options: - Changes in DNA sequences - Plant reproduction - Natural disasters - Gamma radiation - biological diversity - DNA sequences staying the same - the environment - that material's properties
Changes in DNA sequences

Cells vary in size as well as shape, but all cells are very small, and lymphocytes in circulation are small cells. Given these facts, what size are lymphocytes among the following options: - small - PDAs - massive - dense - white - huge - CO 2 - large
small

Q: Animals can communicate with sounds, chemicals, or visual cues, and all cats are animals. Given these facts, what can communicate with sounds, chemicals, or visual cues among the following options: - sound waves - bears - sheep - humans - sun rays - clouds - Birds - cats
A: cats

Question: Fat is used to keep animals warm, and additionally, a layer of fat beneath the skin provides insulation. Given these facts, how does insulation help animals among the following options: - stability - morality - sharks - fur - survive - electrical conductivity - fibers - warmth
Answer: warmth

*Question*
Awindmill converts wind energy into electricity primarily by using mechanical energy, and windmills are machines operated by windpower. Given these facts, what converts wind energy into electricity among the following options: - clouds - mechanical waves - windpower operated machines - Movement of an air mass - solar panels - Warm air moving into cold air - batteries - tectonic plates being pushed together
**Answer**
windpower operated machines

(Question)
Earthworms are important deposit feeders that help form and enrich soil, and deposit feeders ingest sediment and extract food particles. Given these facts, earthworms ingest sediment and extract what from soil among the following options: - Organic compounds - harmful substances - Energy. - food ingredients - h2o - bioaerosols - food particles - carbon
(Answer)
food particles