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
lakkis [162]
3 years ago
5

Many songbirds breed in North America in the spring and summer and then migrate to Central and South America in the fall. They s

pend the winter in these warmer areas, where they feed and prepare for the spring migration north and another breeding season. Two hypothetical species of sparrow, A and B, overwinter together in mixed flocks in Costa Rica. In spring, species A goes to the east coast of North America, and species B goes to the west coast. What can you say about the isolating mechanisms of these two species?
Biology
1 answer:
larisa [96]3 years ago
6 0

Answer:

Their winter habitat has no bearing on their degree of reproductive isolation.

Explanation:

The two species of sparrows breed only during spring and summer and it has been given that during this time the species live separate from each other. Hence they do not breed with each other.

It is in winter that they live together but this season is not the breeding season. They only feed and prepare for the upcoming breeding season during this time hence the winter habitat has no effect or bearing on their degree of reproductive isolation.

Reproductive isolation only comes into play during summer and spring where they show prezygotic isolating mechanism. They live far from each other thus show habitat isolation due to which they do not mate with each other.

You might be interested in
In, addition to water, what would most likely be found in a plant central vacuole?
mrs_skeptik [129]

Answer:

The correct answer would be c) food molecules.

A vacuole is a membrane-bound cell organelle present usually in the center of the plant cell.

It contains a high amount of water as it plays important role in maintaining the turgor pressure of the cell.

In addition, it contains a high amount of ions (such as K⁺, Mg²⁺, Ca²⁺), food molecules (such as glucose, sucrose, fructose), organic acids (such as malic, tartaric, quinic) and waste material.

8 0
3 years ago
Arrange the sentences in order to describe how oxygen from air is transported to the cells in the kidneys.
AURORKA [14]

Answer:

The pulmonary veins carry oxygenated blood to the heart. Air enters the bronchioles in the lungs and reaches the alveoli. The capillaries join together to reach the arteries, transferring the oxygen. The oxygen-rich blood moves from the aorta and reaches the kidneys through a series of blood vessels.

5 0
4 years ago
How do fossil fuels contribute to air pollution?
postnew [5]

Answer:

A) releasing carbon dioxide into the air

6 0
3 years ago
Read 2 more answers
Which of the following traits of bacterial cells differ signifcantly from the other domains of life?
wariber [46]

Answer:

Option (A), (B), (D) and (F).

Explanation:

Bacteria are involved in the domains of eubacteria and archaea. Bacteria are different from the other organism and shows different in the chemical and cellular structure of the cell.

The translation elongation factors are different in bacteria and other organisms. The translation factors of bacteria are EF-Tu and EF-Ts whereas the eukaryotic elongation factors are eEF-1 subunit α and eEF-1 subunit βγ. A single RNA pol is present in bacteria and three different RNA pol is present in eukaryotes. Peptidoglycan is present in prokaryotes. Phospholipids contain ester linkage in bacteria and ether linkage in archaea.

Thus, the correct answer is option (A), (B), (D) and (F).

6 0
3 years ago
Does an allele that has no affect on a species fitness affected by natural selections
katen-ka-za [31]
Somewhat honestly yes
5 0
3 years ago
Other questions:
  • Never a dull moment!!
    8·2 answers
  • Double fertilization in angiosperms is most similar to ______.
    9·2 answers
  • What is the term for the non-living parts of a community?
    8·2 answers
  • How many ways are there for carbon to get transported to the atmoshpere
    7·1 answer
  • Identify the type of friction acting in each scenario.
    11·2 answers
  • Which of the following situations would be an example of sensory adaption? A. A loud noise suddenly startles a women as she is a
    8·1 answer
  • Oxygen was initially created in Earth's atmosphere by _____. volcanoes outgassing cyanobacteria photosynthesizing greenhouse eff
    11·2 answers
  • 4. The diagram below illustrates the release of chemical A from a human
    9·1 answer
  • Which 2 body systems become activated when a virus enters an animal's nasal passageway?
    14·2 answers
  • Someone please help asap.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!