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
meriva
3 years ago
15

Do polar Bears and American black bears share a common ancestor

Biology
1 answer:
Alex73 [517]3 years ago
8 0

Instead, according to a research team that looked at DNA samples from the two species and from black bears, the brown bear and polar bear ancestral lines have a common ancestor and split about 600,000 years ago.

You might be interested in
In plants what is stroma ?
Alenkasestr [34]

The space enclosed by the inner membrane is called the matrix in mitochondria and the stroma in chloroplasts. Both spaces are filled with a fluid containing a rich mixture of metabolic products, enzymes, and ions.

3 0
3 years ago
Read 2 more answers
Which statement describes DNA​
Romashka [77]

Answer:

DNA stores an organism’s genetic code.

3 0
3 years ago
Read 2 more answers
Morning commuter traffic in cities contributes to ____ smog. In this type of air pollution, a mixing of ____ from certain plants
azamat

Answer:

photochemical

hydrocarbon

Explanation:

Morning commuter traffic in cities contributes to<u> photochemical</u> smog. In this type of air pollution, a mixing of <u>hydrocarbons</u> from certain plants, nitrogen oxides from cars, and UV radiation from the sun results in a variety of pollutants, such as ground-level ozone, which can cause coughing and breathing problems.

<em>Photochemical smogs are caused by the photochemical reaction of hydrocarbon and nitrogen oxides in the lower atmosphere with sunlight playing a major role. The reaction of the hydrocarbon with the nitrogen oxide in the presence of light leads to the evolution of ozone gas while nitrogen oxide has the capacity to react with the sunlight on its own to produce nitrogen dioxide. This result in the formation of smog</em>

4 0
3 years ago
Where in the chloroplast does the photo part of photosynthesis occur?
Alekssandra [29.7K]

Answer:

Photosynthesis happens when water is absorbed by the roots of green plants and is carried to the leaves by the xylem, and carbon dioxide is obtained from air that enters the leaves through the stomata and diffuses to the cells containing chlorophyll.

Explanation:

:)

3 0
2 years ago
________ contains multiple gymnosperm ovules
m_a_m_a [10]

Answer:

immature ovulate

Explanation:

An ovulate cone will become a mature gymnosperm cone after all of the ovules mature into seeds.

4 0
3 years ago
Other questions:
  • The pedigree on the right shows the inheritance pattern for an X-linked recessive disorder. The mother of the individuals circle
    10·2 answers
  • If a person consumed the upper amdr limit for protein as part of a diet containing 2500 kcalories, approximately how many grams
    14·1 answer
  • These are all a source of _____ on the earth
    10·1 answer
  • Contains nitrogenous bases: DNA, RNA, or both.
    10·2 answers
  • Phenylketonuria (PKU) is a recessive genetic disorder. If both parents are carriers, what is the probability of this couple havi
    6·1 answer
  • How the salivary glands are affected by the parasympathetic nervous system?
    6·1 answer
  • What is the most basic unit of life? A. tissue B. organ C. cell D. organ system
    13·2 answers
  • Pain in the epigastric region what organs could be involved
    6·1 answer
  • Explain how each of the following factors affect the rate of photosynthesis 1) temperature 2) inorganic ions
    5·1 answer
  • Which statement is true of the X chromosome?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!