Lemon juice, snake venom and cyanide have similar characteristic

How are the processes of asexual reproduction and sexual reproduction different? Select three options.

Butoxors [25]

RNA has great capability as a genetic molecule; it once had to carry on hereditary processes on its own. It now seems certain that RNA was the first molecule of heredity, so it evolved all the essential methods for storing and expressing genetic information before DNA came onto the scene.

6 0

3 years ago

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An owl has good night vision because its eyes can detect a light intensity as small as 5.0 × 10-13 W/m2. What is the minimum num

Lady bird [3.3K]

Answer:

Thus, the minimum number of photons per second is 77.34

Explanation:

Light intensity, $I_{min}$ = $5\times 10^{-13} W/m^{2}$

Pupil has a diameter, d = 8.5 mm

= 8.5 x $10^{-3}$ m

Radius of the eye, r = 4.25 x $10^{-3}$ m

∴ Area of the eye, A = $\pi .r^{2}$

= $3.14\times \left ( 4.25\times 10^{-3} \right )^{2}$

= $5.6\times 10^{-5} m^{2}$

Let $P_{min}$ be the minimum number of photons.

Therefore, $P_{min}$ = $I_{min}$ x A

= $5\times 10^{-13}$ x $5.6\times 10^{-5}$

= $2.8\times 10^{-17}$ W

Thus the minimum number of photons is given by

$N_{min}=P_{min}/E$

where E = $hc/\lambda$

= $\left (6.63\times 10^{-34}\times 3\times 10^{8} \right )/548\times 10^{-9}$

= $3.62\times 10^{-19} J$

Therefore, $N_{min}$ = $\frac{2.8\times 10^{-17}}{3.62\times 10^{-19}}$

= 77.34 photons per second

Thus, the minimum number of photons per second is 77.34

4 0

3 years ago

does the changing seasons remove co2 from the air ? i think it might due to increased plant grwoth but im unsure.

MA_775_DIABLO [31]

I don't think changing seasons can REMOVE CO2 from the air, but I do think instead it could add it to the air. It's a long process that involves several ecosystems and stuff. But, as the climate is getting warmer, ice caps are melting and within these ice caps... there are trapped bubbles of CO2 that are released ( I am not sure if this adds a lot of CO2 to the atmosphere, but I am sure that it does contribute to CO2 concentration).

In relation to your last statement... plant growth would actually reduce CO2 in the air because of the process of photosynthesis. Plants take in CO2 and give out O2 for us to breathe. In turn we conduct cellular respiration in which we take in the O2 and give out the CO2. So, plants are actually one good solution for decreasing CO2 levels.

5 0

3 years ago

Use the resources provided to either describe in words OR create a model that describes at least 4 reasonable factors that might

Natasha_Volkova [10]

Answer:

Use the resources provided to either describe in words OR create a model that describes at least 4 reasonable factors that might influence the carrying capacity of Nubian ibex in Israel.

Explanation:

Use the resources provided to either describe in words OR create a model that describes at least 4 reasonable factors that might influence the carrying capacity of Nubian ibex in Israel. Use the resources provided to either describe in words OR create a model that describes at least 4 reasonable factors that might influence the carrying capacity of Nubian ibex in Israel. Use the resources provided to either describe in words OR create a model that describes at least 4 reasonable factors that might influence the carrying capacity of Nubian ibex in Israel.

7 0

2 years ago

Which is true if energy in ecosystem

Lunna [17]

Explanation:

energy flows in only one direction through an ecosystem.

7 0

2 years ago