4.

Biology

2 answers:

enyata [817]3 years ago

8 0

The answer is A
hope this helps

Yanka [14]3 years ago

3 0

genomics, a. in my opinion

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The correct answer will get Brainliest!

Leto [7]

Answer:

Diversity of the community = 2.097

Explanation:

Given:

Number of pitch pines = 134

Number of douglas firs = 24

Number of red pines = 53

Find:

Diversity of the community

Computation:

Simpson's diversity index = N(N-1)/Σn(n-1)

Particular n n(n-1)

Pitch pine 134 17822

Douglas firs 24 552

Red pine 53 2756

Total N=211 21130

So,

D= [211(211-1)] / 21130

D = 2.097

Diversity of the community = 2.097

7 0

3 years ago

Which of the following statements about dinoflagellates is true? Select one: A. All known varieties are autotrophic. B. Their wa

Valentin [98]

Answer: The correct option is D(Some produce toxic agents in the water).

Explanation:

Dinoflagellates are found in the phylum Dinoflagellata which are single celled organisms. They are mostly found in the ocean while few of them can live in streams, freshwater ponds and rivers. The following characteristics can be used to identify a Dinoflagellates, these include:

--> they are golden brown

--> they possess assimilative cell with indented waist.

--> they possess large nucleus with visible chromosomes.

It has been reported that many dinoflagellate species can produce various natural toxins. These toxins can be extremely toxic and many of them are effective at far lower dosages than conventional chemical agents. Therefore the option, Some produce toxic agents in the water, is a correct statement.

6 0

3 years ago

According to the envelope in Model 1, who is supposed to receive the letter?

matrenka [14]

If you are referring to the model attached, then the answer would be:

This model demonstrates how one can categorize something based on certain information from general to specific characteristics. For example, many people have the same names, so how would we know who the person is referring to? Using specific details like the house number, building name or apartment, street and zip code will help narrow down who the letter is addressed to specifically. This is a method they use to organize organisms into specific classifications, based on specific characteristics.