Answer:
biotic things r living and abiotic are not living
Explanation:
Arteries carry blood (with oxygen) from our heart out to your body, while veins carry blood (without oxygen) from your body to your heart. Arteries are strong, flexible blood vessels that are able to expand (get bigger) and contract (get smaller). They expand as your heart beats, and contract between heart beats. Veins are less flexible than arteries. They have valves (doors) that open and close to let blood through.
Answer:
Limits to variation The most obvious limit to natural selection is that suitable variation may not be available. This may be because certain phenotypes cannot be built, being ruled out either by physical law or by the properties of biological materials.
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Answer:
thermal energy can be transferred from one object or system to another in the form of heat. Geothermal energy is thermal energy within the Earth due to the movement of the Earth's particles. Most of this geothermal energy is contained within the core of the Earth.
Explanation:
Answer:
Regions like the Aps or Rockys, as well as Pacific Coastal Ranges have critical landslide problems.
Explanation:
Mudslides are caused by excessive rainfall and steep terrain, while landslides can be caused by slow weathering of rocks as well as soil erosion, earthquakes and volcanic activity.
