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Softa [21]
3 years ago
8

Often organisms seem similar in their outward appearances. For example, a porpoise and a shark seem closely related, but they ar

e not. Such similarity is the result of
A. genetic equilibrium.

B. convergent evolution.

C. adaptive radiation.

D. artificial selection.
Biology
2 answers:
k0ka [10]3 years ago
8 0
The answer is B. Convergent evolution.
Effectus [21]3 years ago
5 0
The answer is Definitely B
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Historically, wildfires were viewed as detrimental to forest ecosystems
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Answer: True

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3 years ago
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There are 3 main categories of environmental problems that have come about because of the population growth. What are they and e
kakasveta [241]

Answer:

i)declination of resources

<em>ii</em><em>)</em><em> </em><em>air</em><em>,</em><em> </em><em>water</em><em> </em><em>and</em><em> </em><em>land</em><em> </em><em>pollution</em>

<em>iii</em><em>)</em><em> </em><em>global</em><em> </em><em>warming</em>

Explanation:

As we all know that population is increasing day by day, all the country of the world are facing rapid population growth.we are facing many problems, the population growth is increasing day by day, the more the population, the more resources we need due to this, the resources is decreasing day by day, we need more resources as there is more population, the increasing population makes more pollution due to this global warming is increasing. <em>We know that there is no more more resources in our world if the resources is finished in this day the future generation will not be able to survive and will not be able to use such resources</em><em>.</em><em>we should prevent such resources for future generation also the future generation </em><em>should</em><em> get the chance to use such resources </em><em>.</em><em>the pollution is increasing day by day </em><em>.</em><em>we should control it </em><em>.</em><em>the main thing is that we should control the rapid population growth </em><em>population</em><em> </em><em>growth should be controlled due to this </em><em>global</em><em> </em><em>warming</em><em> </em><em>is</em><em> </em><em>increasing which is very dangerous </em><em>leading</em><em> </em><em>to the declination of ozone layer due to </em><em>which</em><em> </em><em>the</em><em> </em><em>harmful</em><em> </em><em>rays</em><em> </em><em>of</em><em> </em><em>sun</em><em> </em><em>may</em><em> </em><em>enter</em><em> </em><em>the</em><em> </em><em>earth</em><em> </em><em>which may cause various problems in us and cause various diseases due to </em><em>which</em><em> </em><em>we ma</em><em>y</em><em> </em><em>die</em><em>.</em><em>the main thing is that we should stop the population growth, we should conduct public </em><em>awareness</em><em> program</em><em>m</em><em>e</em><em>s</em><em> </em><em>and many more </em><em>programmes</em><em> </em><em> to educate </em><em>people</em><em>.</em><em> </em><em>Population growth al</em><em>s</em><em>o</em><em> </em><em>creates</em><em> </em><em>deforestation</em><em> </em><em>as</em><em> </em><em>the</em><em> </em><em>number</em><em> </em><em>of</em><em> </em><em>people a</em><em>r</em><em>e</em><em> </em><em>increasing day by day they need more place to l</em><em>i</em><em>v</em><em>e</em><em> </em><em>,</em><em>they need more Land due </em><em>to</em><em> </em><em> </em><em>t</em><em>his </em><em>they</em><em> </em><em>cut</em><em> </em><em> down the trees of forest and used to make houses there due to </em><em>which</em><em> </em><em>d</em><em>e</em><em>f</em><em>o</em><em>r</em><em>e</em><em>s</em><em>t</em><em>a</em><em>t</em><em>i</em><em>o</em><em>n</em><em> </em><em>takes </em><em>place</em><em>.</em><em> </em><em>we all know that d</em><em>e</em><em>f</em><em>o</em><em>r</em><em>e</em><em>s</em><em>t</em><em>a</em><em>t</em><em>i</em><em>o</em><em>n</em><em> </em><em>is the process of cutting down </em><em>trees</em><em>.</em><em> </em><em>so the tree should not be </em><em>cut</em><em> down </em><em>as</em><em> </em><em>it</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>source</em><em> </em><em>of</em><em> </em><em>oxygen</em><em> </em><em>for</em><em> </em><em>all</em><em> </em><em>creatures</em><em> </em><em>living</em><em> </em><em>in</em><em> </em><em>this</em><em> </em><em>whole</em><em> </em><em>world</em><em> </em><em>and the main thing is that we should provide education to the children and the youth and many </em><em>more</em><em>.</em><em> </em><em>if</em><em> </em><em>we are educated </em><em>we</em><em> </em><em>can</em><em> </em><em>stop</em><em> </em><em>such</em><em> </em><em>population</em><em> </em><em>growth</em><em>.</em><em> </em><em>so the main thing is that we </em><em>should</em><em> </em><em>stop population growth by giving </em><em>education</em><em>.</em><em> </em><em>Education</em><em> is the only one </em><em>way</em><em> </em><em>to</em><em> </em><em>stop</em><em> </em><em>such</em><em> </em><em>population</em><em> </em><em>growth</em><em>.</em>

5 0
3 years ago
Phospholipids are lipids that form most of the structure of the cell membrane. True or false
Morgarella [4.7K]
I could be wrong but I believe the answer is True.
8 0
3 years ago
Compare and contrast a virus to a cell. What would be some differences? What are some similarities?
34kurt

Answer:

Both contain genetic material, in the form of DNA and/or RNA. Both of them can replicate, that is, produce more organisms similar to themselves. ... They require a host cell to carry out life processes, such as replication and carrying out genetic instructions, etc. Bacteria are relatively bigger in size than viruses.

4 0
3 years ago
Which phrases describe radioactive elements? Check all that apply.
svp [43]

A radioactive element is an element which is subject to spontaneous degeneration of its nucleus followed by the emission of alpha, beta and gamma particles. All elements with atomic numbers greater than 83 are radioactive.

The given phrases that describe radioactive elements are-

They have a consistent number of particles - the particles are alpha, beta and gamma particles.

They have a half-life that determines their rate of decay.

Explanation for other options:

Not all elements occur in nature. Radioactive decay rates may not be constant as the decay happens when a radioactive substance emits a particle. It is not possible to predict exactly when a given atom of a substance will emit a particular particle. When the radioactive element release energy and particles, it decays.

5 0
3 years ago
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