I'm sorry but I need a little bit more context
Answer:
hailstones --> Hail is a type of precipitation, or water in the atmosphere. Hail is formed when drops of water freeze together in the cold upper regions of thunderstorm clouds. These chunks of ice are called hailstones. Most hailstones measure between 5 millimeters and 15 centimeters in diameter, and can be round or jagged.
i am sorry i can not answer the oxygen question because it is not all there.
Answer: D
Explanation:
lIf the change in the ecosystem occurs, then it would effect the weather, temperature, and the abiotic factors. So, we can see that the bacteria could survive in any sort of temperature. So, A can't be it. Also, B can't be it because the grass can grow in any sort of soil, even if the soil is contaminated. C cant be it because even if the change in the envoriment (temperature, contaimination) kills of one of the brown bear's food source, they can still have other things they can eat. But, if the weather gets too hot or the soil gets contaimnated and kills off the ecalyptus plants, the koala has nothing else to eat. So, best answer is D.
Natural gases are gases that are found deep underground. These gases have formed through billions of years by organisms that have decayed or decomposed and released natural gases. Natural gas can be obtained by drilling into a particular ground. Scientists can determine certain locations of natural gases in several methods like studying the geology of an area, inspecting its seismic energy, as well as looking into its magnetic properties. Many natural gas sites are located in the United Arab Emirates area.
