together and PROTONS move from one object to the other.
Answer:
true
Explanation:
yes because I said so
just above the belly button
B.
just above the knees
C.
just below the neck
D.
just below the hips
An individual center of gravity can usually be found just below the hips. The correct option is D.
Usually, a person's centre of gravity is situated just below the hips. The location where the body's mass is equally distributed in all directions is referred to as the center of gravity.
The centre of gravity in a standard standingposition is below the hips, specifically in the area of the pelvis. This position gives the body stability and balance, enabling effective movement and control.
Thus, the correct option is D.
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dissolved toxic materials wash from mines into nearby lakes and streams.
a buildup of residual acidity in soils destroys large areas of vegetation.
the acidity of metals in mines exceeds level 9 on the pH scale.
Answer:
Acid mine drainage is dissolved toxic materials wash from mines into nearby lakes and streams.
Explanation:
Acid mine drainage is the flow of acidic water with pH typically between 2 and 4, and high concentrations of other dissolved toxic materials from mines into nearby lakes and streams. It mainly occurs during metal sulfide mining, when the metal sulfide ore such as pyrite (FeS2) is exposed to water and oxygen from air to produce soluble iron and sulfuric acid.
Microorganisms, especially acidophile bacteria like Acidithiobacillus ferrooxidans grow by pyrite oxidation, i.e., oxidizing the Fe²⁺ in pyrite to Fe³⁺, which again react with pyrite and water to produce sulfuric acid. Then the acidic water flows into nearby water sources and reduces the pH value of water in those sources. As a result, heavy metals such as copper, lead, mercury, etc in other mineral ores also get dissolved into the water. The action of acidophile bacteria also increases the rate and degree of acid-mine drainage process.
The acid mine drainage causes water pollution and adversely affect the aquatic plants and animals. It also results in the contamination of drinking water, corrosion of infrastructures such as bridges, etc.
(1%, 0.9%) simplest answer
The answer is a. Straight lines
Answer:
Option 3) Constructive And destructive interference of light waves
Explanation:
When the light is incident on a soap bubble of certain thickness it constructively interferes for wavefronts which are in phase to produce white light and when the wavefronts are out of phase, they undergo destructive interference to produce a series of colors. Thus, interference is the reason.