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3 years ago

explain how the threat of Extinction of some rainforest plant species could also be a threat to humans. (Please Help)

2 answers:

7 0

Because some plants can be some type of medicines and we need those. Also some animals use it to keep them alive and if that plant becomes extinct so can the animal then ruin how our ecosytem runs.

Karolina [17]3 years ago

3 0

Humans depend on plants and if humans cut down trees less oxegeon for us and less food for the animals

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Why did Miller use ammonia , methane and hydrogen his experiment

ladessa [460]

Answer:

hold on

Explanation:

working on it

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3 years ago

Which element is capable of forming long chains by forming single, double, or triple bonds with itself?

Mnenie [13.5K]

The element carbon makes long chains forming, single, double or triple bonds with itself.

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3 years ago

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

A major function of the nervous system is the autonomic operation. Which items are related to this?

lutik1710 [3]

Digestion, medulla, heart, and involuntary muscles

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3 years ago

Review the chart, which shows the population sizes of three African animals in 1990 and in 2000.

iren2701 [21]

The explanation which is best supported by the numbers in the chart is that Lion and cheetah populations compete for the food source of zebras, and lions outcompete cheetahs. Thus, the correct option is A.

<h3>What is Competition in the population?</h3>

Competition in population may be defined as the existence of two or more same or different species that are actively fighting over the same resources and factors that they disseminate.

Competition and predation are the two types of species interaction through which the population of species either increases or decreases.

According to the given chart, it is noticeable that the population drop in predator cheetah and lion populations because of the reduction in zebra lowering population but the in cheetah population is additionally than that of the lion.

Therefore, the correct option for this question is A.

To learn more about Competition, refer to the link:

brainly.com/question/1638475

#SPJ1

4 0

2 years ago