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Katarina [22]
3 years ago
8

How did the lab activities help you answer the lesson question: How does human activity affect Earth’s freshwater resources? Wha

t did you learn from conducting this lab?
Biology
2 answers:
Sphinxa [80]3 years ago
8 0

Answer:

Since the origin of humans on this planet, they have been trying their best to make their lives easier on this planet. In doing so, human activities have some how heavily damaged the Earth. Many day to day activities of humans are dangerous for the Earth.

Some of the consequences of human activities on the Earth's fresh water are :

Extinction of many aquatic species:

The water consumed by humans comes from the fresh water oceans. As the population of humans is increasing enormously, the water from the oceans is being consumed at dangerous levels. This has caused many species of aquatic animals to become extinct or to be at a verge of extinction as they do  not have a habitat to survive or reproduce.

Pollution:

Many heavy industries, house sewage, farmers dispose waste into the fresh water. Hence, killing aquatic animals and polluting the fresh water ecosystems.

Alex787 [66]3 years ago
5 0

Answer:

In the lab, I observed how pollutants affect the pH of lakes and groundwater. Pollutants that result from human activity such as using soap and citric acid can change the pH of water. If the pH of the water changes, it might not be safe for people to drink that water or for organisms to live in it. I also learned that the pollution in a lake can end up in groundwater. Even though the soil can filter some pollutants and the water may look clean, its quality may not be good.

Explanation:

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The atomic mass is the
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Answer:

Number of protons plus the number of neutrons.

Explanation:

Most of an atom's mass is in its nucleus. The nucleus is made up of protons and neutrons.

4 0
3 years ago
Why is it important that tissues are composed of specialized cells?
KatRina [158]
Cell specialization allows new cells to develop into a range of different tissues, all of which work together to make living organisms function as a whole. The process of cell specialization exactly how cells develop into their diverse forms is complex.
6 0
2 years ago
When NADH is the electron donor to the respiratory chain, 2.5 ATP are formed, but when FADH2 is the electron donor, only 1.5 ATP
Fofino [41]

Answer:NADH donates it electron to complex I a higher energy level than other complexes while FADH donates it electron to complex II a lower energy complex.

Explanation:

Both NADH and FADH are shuttle of high energy electrons originally extracted from food into the inner mitochondrial membrane.

NADH donate it electron to a flavoprotein consisting of FMN prosthetic group and an iron-sulphur protein in ETC complex-I. Two electrons and one hydrogen ion are are transferred from NADH to the flavin prosthetic group of the enzyme.

While the electrons from FADH2 enters the ETC (electron transport chain) at the level of co-enzyme Q (complex II). This step does not librate enough energy to act as a proton pump.

So NADH produces 2.5 ATP during the ETC and oxidative phosphorylation because it donates its electron to Complex I, which pump more electrons across the membrane than other complexes.

5 0
3 years ago
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When a cold can of soda is insulated, the heat flow into the can on a hot day ____.
maksim [4K]
The word insulate means to protect from heat, cold,...
So when a can is insulated, means that is protected from heat.
So the answer is:
C. stays the same :)))
I hope this is helpful
have a nice day
4 0
2 years ago
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In some coastal areas, the air temperature is high throughout the day. There is often precipitation in the late afternoon. Which
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B. Rain hope I helped
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