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Oksanka [162]
3 years ago
11

1) What evidence is there that the human species has been successful so far? Explain.

Biology
1 answer:
tester [92]3 years ago
4 0

1) What evidence is there that the human species has been successful so far? Explain. 


Successful evolutionarily means "surviving and spreading geographically". Since we are far from extinction and we've spread all over the world, we are successful as a species. 

<span>2) What environmental pressures in the past do you think were most important in shaping the human species as it exists today? 

Those were: the weather (too cold, especially in the north and too hot in Sahara) - those made people more able to accomodate to the weather and predators - this made the species more communicative as only working together can we fight off bigger predators. 

3) What environmental pressures exist now that you think may be shaping the human species? 

</span>The pressures today are : the limited free land, limited resources and changing climate. They are connected to man-made global warming and overpopulation
<span>

4) What environmental pressures do you think may affect humans as Earth becomes more populated with humans in the future? Explain how these pressures may affect human traits.

The pressure in the past will be: raising temperature and flooding, more Co2 in the atmosphere. 

We might for example evolve to better extract the oxygen from the atmosphere and be better resistant to heat. 
</span>




Answer: I believe that the environmental pressures that exist now and that may be shaping the human species are the use of land, the extraction of resources, greenhouse emissions and water use. This are being used by use more and more as we start overpopulating the earth.

<span />
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<span>The propositions are:
A. The gas in the car is the digestive system that provides the necessary energy.
B. The frame of the car is the digestive system that provides structure and support to the body.
C. The exhaust system of the car is the excretory system that removes waste. 
D. The engine of the car is the digestive system that circulates nutrients to the rest of the body.
E. The oil in the car is the excretory system that protects and coats the body.

The right answer is: C and D
*The exhaust system in the car removes waste from the engine like carbon dioxide, carbon monoxide, and several oxidated particles that are unuseful. The same thing for the excretory system in human, it excretes urea, creatinine, and urobillongen (all are wastes from a metabolism).
*The nutrient in the car are represented by the fuel, it is the component that gives energy to the wheels to roll.</span>
3 0
3 years ago
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5 0
3 years ago
which pair shows compounds with the same radical? a. naoh and nacl b. ba(oh)2 and ba(no3)2 c. al(oh)3 and naoh d. ba(no3)2 and a
Hitman42 [59]
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In chemistry, a radical is defined as an atom, ion or molecule that possess an unpaired valence electron. Generally, radicals are highly reactive chemically. Examples of radicals are hydroxyl, hypochlorite, nitrate, carbonate, oxalate, permanganate, etc. Free radicals combine with one another or with single atoms to produce neutral substances. In the question given above, the two compounds given in option C have the same type of radical, which is hydroxyl radical. 
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8 0
3 years ago
What is the main difference between active and passive transport?
Dovator [93]

Answer:

B)the energy required

Explanation:

The difference between active and passive transport is in the amount of energy they both require.

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  • Passive transport moves molecules from higher concentration region to one with lower concentration without requiring energy.

Energy is the ability to do work. In passive transport, energy is not used. But in active transport, energy is required.

8 0
3 years ago
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