The gravitational pull of the Moon on Earth 's oceans causes the tides, and high tide is when the best waves come in. Given these facts, what does the gravitational pull of the Moon on Earth 's oceans cause among the following options: - Energy. - two - waves - fires - the Sun - sunlight - rivers - erosion
waves

Active immunity results when an immune response to a pathogen produces memory cells, and memory cells persist in the circulation for decades. Given these facts, what can persist in the circulation for decades among the following options: - active immunity - density - Veins and arteries. - oxygen cells - bacteria - chlorofluorocarbons - fur and fat - Chemical energy
active immunity

Q: Living things all require energy for survival, and energy conservation is an important survival trait. Given these facts, living things all require energy conservation as a what among the following options: - support - good - Species - syndrome - gene - adapt - habit - trait
A: trait

Question: Cells are organized into tissues, and tissues form organs, and bacteria are one-celled organisms. Given these facts, what only have one cell and no tissue among the following options: - ferns - Most plants - mice - bacteria - frogs - Conifers - cell wall - fungi
Answer: bacteria

*Question*
Sound can be used for communication by animals, and many animals rely on sounds to communicate to others in their species. Given these facts, what do species rely on to talk among the following options: - Frogs - energy - language - hands - squids - feet - Frogs. - sound
**Answer**
sound

Q: Carpooling decreases the amount of cars used to travel to a place, and less travel leads to fewer car or plane emissions, and less pollution. Given these facts, what leads to less emissions and less pollution among the following options: - energy - trucks - electricity - power - jets - motorcycles - hydration - carpooling
A: carpooling