Running water is better able to dissolve oxygen and nutrients than standing water, and streams and creeks provide running water. Given these facts, what is better able to dissolve oxygen and nutrients than standing water among the following options: - puddles - microorganisms - ponds - nitrogen - swamp vegetation - Veins and arteries. - streams and creeks - peachleaf willow
streams and creeks

Erosion causes a river to become deeper and wider, and erosion is the work of wind, water, and time. Given these facts, the work of what causes a river to become deeper and wider among the following options: - looseness of dirt or compost - just time - Veins and arteries. - just wind - Physical weathering - The area was once underwater - just water - wind, water, and time
wind, water, and time

Q: Ice wedging is when ice causes rocks to crack by expanding in openings, and water expands as it freezes into ice. Given these facts, how does water crack rocks among the following options: - Turning to silt - bottom of feet - Turning to ice - Getting hot - erosion - Mixing with salt - lowered energy cost - Movement
A: Turning to ice

Question: High temperatures can cause an object to combust, and combustion requires oxygen to burn. Given these facts, applying high temperature in the presence of what can cause an object to burn/ among the following options: - heat - toxins - energy - oxygen - sweating - Energy. - Pollution - expand
Answer: oxygen

*Question*
An automobile engine transforms chemical energy into mechanical energy, and mechanical Energy- Mechanical energy is the energy of moving objects. Given these facts, an automobile acquires the energy for motion from among the following options: - fossil fuels - objects that have mass - a hydraulic system - layers of fat - chemical energy - velocity - strong nuclear force - digestion
**Answer**
chemical energy

Air pollution harms the respiratory and circulatory systems, and nitrogen oxides cause air pollution. Given these facts, harm to the respiratory and circulatory systems can come from among the following options: - Greenhouse gases - hydrocarbons - Sulfur dioxide - nitrogen oxides - burning coal - fossil fuels - emissions - Greenhouse gasses
nitrogen oxides