i think its A, because the gills of a fish help it produce oxygen to it's blood, without them it would eventually die.
Answer:Hola! my name is Marissa and im here to help!
it basically means that someone like a classmate will look over your paper and give suggestions this is called "peer critiqing" they can show you mistakes on your work and also show you areas that should probably be revised. brainliest?
Explanation:
Answer:
Boyle’s Law, an inverse relationship exists between pressure and volume
Explanation:
We know that atmospheric preassure drops 1 mm Hg for every 10 m high.
And according to Boyle's Law, if <u>preassure decreases</u> <u>volume </u>will be<u> increased</u>.
Having in mind that density is the mass of anything ( air included) divided by the volume it occupies; if volume increases <u>density</u> will be <u>lower</u>.
So, lower pressure lower density
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The U.S. has more than 87,000 dams greater than six feet high (and two million overall). While many dams continue to provide benefits such as flood control, irrigation, and water supply, for other dams the cost of maintenance or the negative effects on communities, fish, and tribes justifies their removal.
Dam owners and regulators decide whether to remove a dam by weighing many factors including: the cost of removal and the ability to replace any lost power generation against avoided long-term maintenance; safety concerns; benefits to endangered fish populations; increased recreational and commercial fishing; and restoration of cultural values of nearby tribes.
By 2020, roughly 70% of dams will be more than 50 years old, inviting us to reconsider the value to the public of long-term investments in this infrastructure.
Answer:
deforestation is having negative impacts on our mother earth ....our eco-system will obviously change ....and we will be facing many disasters like flood....global warming ...acid rain...droughts and all.
