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2 years ago

List 3-5 things about biodiversity.

Biology

1 answer:

8090 [49]2 years ago

6 0

Answer:

Supports a larger number of plant species and, therefore, a greater variety of crops. Protect freshwater resources. Promote soils formation and protection. Provide for nutrient storage and recycling.

Explanation:

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A heron, a large wading bird, is hunting in a pond that contains three types of prey: fish, frogs, and snakes. All three types o

r-ruslan [8.4K]

The preferred prey item would be frogs.

What is optimal foraging theory?

It is a theory in ecology that proposes that predating animals that get the most energy from minimal efforts are favored by natural selection.

In order words, selection forces prefer investing minimum energy in order to extract maximally available energy.

In this case, the heron needs to use the lowest time to harvest the maximum energy possible. Since all the preys offer the same amount of energy, the one that requires the lowest time would be preferable for the heron.

In other words, frogs would be the most preferable prey.

More on foraging theory can be found here: brainly.com/question/16970714

#SPJ12

4 0

2 years ago

Pseudomonas A. are resistant to many disinfectants and antimicrobials.B. are mostly harmless except for the opportunistic P. aer

OLga [1]

Answer:

The best answer is option E.

Explanation:

Pseudomonas are gram-negative bacteria which is present almost everywhere air, soil, water and even indoors. These gammaproteobacteria are also present in some of the healthy people.

Pseudomonas is resistance to many antimicrobials and disinfectants. These bacteria are generally harmless but some opportunistic species like P. aeruginosa are infectious.

Thus, the correct answer is option E.

6 0

3 years ago

Which of the following statements concerning the enzyme, telomerase, is true? (Select all that apply.) A) Telomerase removes tel

Bad White [126]

Answer:

B) Telomerase is a ribonuclear protein containing a section of RNA complementary to the telomeres

C. telomerase is reactivated in cancer cells, contributing to their immortality

Explanation:

Telomerase elongates telomere ends
Telomerase binds to a RNA molecule containing a sequence complementary to the telomeric repeat.

Telomerase is usually not active in somatic cells but is active in cancer cells- the protein acts to extend the shortened telomeres in these cells preventing them from dying

7 0

3 years ago

"Draw a pedigree for hitchhiker’s thumb. Your pedigree should cover at least two generations and include both dominant and reces

igor_vitrenko [27]

Answer and Explanation:

First, you need to know how to interpret a pedigree representation.

Family members

→ Individuals are represented with geometrical figures.

→ Males are squares

→ Females are circles

Trait/Phenotype

→ Healthy/normal/not affected individuals are represented with empty figures

→ Affected/mutated individuals are represented with solid black figures

Generations

→ Each file is represented with a roman number, indicating the Generation.

Now, what we need to do is to draw a pedigree for a hitchhiker’s thumb. We know that this is an autosomal dominant trait, which we will represent with an H. No hitchhiker's thumb is the recessive trait, and it will be represented with an h.

Our pedigree should cover at least two generations and include both dominant and recessive forms of the trait.

We can cross two heterozygous individuals, Hh, who are the first generation in our pedigree.
This cross will result in a woman and a man with No hitchhiker's thumb, another man with a hitchhiker's thumb, HH, and another woman with a hitchhiker's thumb, Hh. These individuals will represent the second generation in the pedigree.
Finally, we can cross the man with No hitchhiker's thumb, hh, with a woman who does not have a hitchhiker's thumb either, hh. And the woman with a hitchhiker's thumb, Hh, with a man with a hitchhiker's thumb, HH. The result of these crosses will be the third generation.

The representation would be like following,

I → First-generation: First cross

Man Hh (1)
Woman Hh (2)

II → Second-Generation: F1 and second crosses

Man hh (3) x Woman hh (4)
Woman hh (5)
Man HH (6)
Woman Hh (7) x Man HH (8)

III → Third-Generation:

A boy (9) and a girl (10) hh
A girl (11) HH

You will find this pedigree in the attached files. In this example, we included three generations. The first one belongs to the grandparents, the second one to parents, aunts/uncles, and the third one to grandchildren.

If you draw another pedigree, remember to include

the figures representing males and females,
color and H/h representing the phenotype,
Roman numbers representing the generations, and optional, numbers naming each member.

5 0

3 years ago

What is the Mid-Atlantic Rift

sveta [45]

It's a deep rift valley which runs along the middle of the ridge along almost its entire length.

6 0

3 years ago

Read 2 more answers