If atoms share two , three or more pairs of electrons..they are covalent bonds..for example, methane
if the atoms share only a lone pair of electron contributed by only one of the combining atoms but shared by both ..then it is a coordinate bond ..for example, ammonium ion
A scientific theory can always be disproved if someone comes along with better evidence which shows another theory is true. However, most other theories are small improvements on existing ones. Evolution and natural selection (the theory that animals' populations change over time because their environment encourages specific different features for individuals that happen with mutation) was an improvement on the existing "theory" that animals were built to be fit for their environments. The earth rotating around the sun was a theory improving on the idea that the sun and the earth move around so that it looks like the sun moves around the earth. All of these happened because there was evidence, so while theories aren't always absolutely true, many modern theories are typically well-tested and if they aren't, they are usually refered to as hypotheses or models (although models can sometimes also be theories, like the Standard Model)
Answer:
Because of water movement
Explanation:
plsss brainliest :)))))))))
Answer: Protect yourself from the earthquake or volcanic eruption when it occurs because when this happens it is very likely that a tsunami will follow. Escape from the epicenter of the disaster, get as far away as possible from the water and get to a place as high as possible.
Explanation:
Indonesia is an archipelago of almost 20 thousand islands and it is located on the Pacific "Ring of Fire" which is a region where many volcanic eruptions and earthquakes occur independently of other events in other parts of the Ring. This means, <u>Indonesia is vulnerable to volcano eruptions and earthquakes that eventually will cause tsunamis.</u>
A tsunami is a complex event involving a group of waves in water of high energy and variable size that occurs when a large body of water is vertically displaced by some extraordinary phenomenon, for example, an earthquake, volcanic eruption, landslides, underwater detonations, meteorite impact, glacial ice slides, and others. So it is generated by the displacement of water.
The rist index for a tsunami to occur there is 9.7 of 10, this means that such an event is highly likely to occur. Since it is a natural phenomenon, there is no way to prevent it, however, there are several actions to take into account to avoid suffering major damage when this happens. <u>This basically consists of protecting yourself from the earthquake or volcanic eruption when it occurs because when this happens it is very likely that a tsunami will follow</u>. So you have to take it as a warning sign to flee in time. The most important thing is to escape from the epicenter of the disaster, logically get as far away as possible from the water and get to a place as high as possible, such as a mountain. It is necessary to be aware of the news and warnings to monitor the situation.
Answer:
the mechanical advantage is 1.(one)
Explanation:
Since the mechanical advantage is the ratio of load to effort, Victoria's load is 100 and her effort is also 100. When you divide 100 by 100 you get 1 which is the answer
