1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Bingel [31]
2 years ago
5

In a study published in the journal Nature, scientists studied eight ponds in Florida: four that were populated by a species of

fish and four that were not. As they studied the ponds, they noted that the areas around the four fish-populated ponds showed decreased populations of dragonflies and dragonfly larvae, whereas the four without fish showed abnormally large populations of dragonflies and larvae. Dragonflies feed on bees, butterflies, and other pollinators.
Predict what would happen to the rate of pollination of flowers in a field next to a pond with no fish. Use evidence to support this prediction. Identify the keystone species in this scenario and explain how you have inferred this.
Biology
1 answer:
Reika [66]2 years ago
7 0

Answer:

Explanation:

The rate of pollination in the field (near the pond with no fish) will decrease exponentially. Because, as the fish population is removed from that ecosystem, the population of dragonflies and larva increases without check because, fish feeds on the dragonflies larva and kept there population in check. Due to this, the population of bees and other pollinators population decline becuase, they are major food source of dragonflies.

Honeybees are the keystone species because it's absence will lead to major changes in the ecosystem.

You might be interested in
For three autosomal dominant genes, what is the probability that a cross between two heterozygotes (i.e. AaBbCc x AaBbCc) will p
Free_Kalibri [48]

Answer:

27/64 or 0.421

Explanation:

When AaBbCC X AaBbCc :

A_B_C_   =   27

aaB_C_    =   9

A_bbC_    =   9

A_B_cc     =   9

aabbC_     =   3

A_bbcc     =    3

aaB_cc      =   3

aabbcc      =    1

Out of the total 64 offspring, 27 will have at least one dominant allele for each of the three genes hence these 27 offspring will show dominant trait for all genes. So the probability of producing a dominant trait for all genes will be 27/64 or 0.421

5 0
3 years ago
Is climate change density dependent ?
Sergio [31]

Extreme climates changes are independent. But some other types are dependent. However, they are too minor to really be included.

5 0
2 years ago
Coin tosses can demonstrate the effects of genetic drift. Imagine that heads and tails are two alleles in a population. Consider
NikAS [45]

Answer:

Smaller populations have a greater chance of having one allele expressed disproportionately.

Explanation:

Genetic drift is defined as the a change in how frequently a gene allele occurs in a given population as a result of random sampling.

This random sampling is similar to having a coin toss that gives heads or tails.

Genetic drift has the tendency of making smaller populations have a greater chance of having one allele expressed disproportionately.

This is because when individuals in a small population mate there is a greater probability that an evolution will have more far reaching effects.

In a large population the effect will be less pronounced.

3 0
3 years ago
Which statement about a compound on this pH scale explains why it is a base?
sasho [114]
A. RbOH is a base because its pH is greater than 7.
This statement is correct and points at the compound being a base because an Alkali always has a pH between 7 and 14. Starting from 7 which is a neutral compound neither acidic nor alkaline, the higher the pH value, the stronger the compound is an alkali or a base. The strongest pH compounds are those that have the pH value of 14 and the weakest alkalis are those the pH value of which is closer to 7.
None of the other options fit this criteria.
8 0
3 years ago
what happens during implantation? &The embryo is developed enough to be called a fetus at the end of which stage?
JulsSmile [24]
By the Time the zygote reaches the uterus, the dividing ball of cells has separated into two sections.T<span>he inner group of cells will become the embryo. The outer group will become the cells that nourish and protect it.
</span>2. The embryonic period
7 0
3 years ago
Other questions:
  • . What is the role of water in this anabolic process
    5·1 answer
  • PLEASE HELP WILL MARK BRAINLEST
    7·1 answer
  • How is the structure of limonene similar to the structure of cyclohexene?
    9·1 answer
  • Which part of the earth system interacts with solar flares?
    7·1 answer
  • For independently assorting genes the maximum recombination
    12·1 answer
  • If the amount of sodium in the blood increases, what would a negative feedback control mechanism be expected to do?
    14·1 answer
  • This element is solid, forms the backbone of many compounds, and life is based on it. What is it?
    14·2 answers
  • The kingdom-level classification system is now preceded by the ________ category, which is based on evolutionary and biochemical
    12·1 answer
  • Based on the data, which gummy bear was in the salt solution and what was the tonicity of that solution? A) A; hypotonic B) D; h
    6·2 answers
  • using a genetic code chart and the mRNA codons provided in the table below, fill in the appropriate amino acids in the BLANK box
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!