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
Korvikt [17]
3 years ago
5

Which of these naturalists synthesized a concept of natural selection independently of darwin?

Biology
1 answer:
mariarad [96]3 years ago
8 0
The answer is Alfred Wallace. 
Darwin began formulating his theory of natural selection in the late 1830s but he went on working silently on it for twenty years. He wanted to amass a wealth of evidence before publicly presenting his idea. During those years he corresponded briefly with Wallace (right), who was exploring the wildlife of South America and Asia. Wallace supplied Darwin's help publishing his own ideas on evolution. He sent Darwin his theory in 1858, which, to Darwin's shock, nearly replicated Darwin's own.
You might be interested in
Which two statements support the claim that viruses are nonliving?
KonstantinChe [14]

Answer:

c and e are the two correct statement that support the claim that viruses are non living

7 0
3 years ago
I need help please . I can’t figure out how to do this
Andre45 [30]

Answer:

You write what you think is going to happen based off those questions. For example, on a, you could put something such as "If I eat 1 lbs of candy I will gain __ pounds." You can change the sentence around to make it your preference.

8 0
3 years ago
An inhibitory stimulus has occurred. B. Chemically gated potassium channels have opened. C. Excessive potassium has diffused out
andrezito [222]

Given question is incomplete. Complete question has been attached.

Answer:

C. Excessive potassium has diffused out causing hyperpolarization.

Explanation:

The nerve action potential can be divided into following stages:

  • Stimulus is detected by the cell in resting stage.
  • Sodium channels in the membrane open from where influx of sodium ions occur which is called depolarization
  • After a while, sodium channels close and potassium channels open from where efflux of potassium ions occur which is called repolarization.
  • The membrane potential further lowers due to continous efflux of potassium ions which is called hyperpolarization.
  • After a while potassium channels close and membrane returns to its resting stage.

In the given figure, stage 4 depicts hyperpolarization because the membrane potential has dropped to the lowest point below -70mV. Hence, option C is correct.

7 0
3 years ago
How does the function of the glottis help the frog survive?
polet [3.4K]

Answer:

This voice box occurs in all amphibians but is anatomically most complex in frogs. The larynx exits into the trachea; the latter bifurcates into the bronchi and then into the lungs. The glottis then opens, and elastic recoil of the lungs forces the pulmonary air out and over the new air in the buccopharyngeal pocket.

Explanation:

4 0
3 years ago
How did the backyard bird feeders in the article increase competition in that ecosystem?
Ronch [10]

Answer:

<em>Backyard bird feeding is a well known </em><em>type of human–untamed life </em><em>communication in specific regions of the northern and southern side of the equator.</em>

Explanation:

In territories where sustaining is mainstream in the Southern Hemisphere, supplemental encouraging may excessively profit acquainted winged creature species while driving with decreases of local species, possibly due to hetero specific competition.

However, Backyard bird feeders can bring about constructive outcomes on some feathered creature species, for example, improved overwinter endurance, expanded populace sizes and geographic range extension.

3 0
3 years ago
Other questions:
  • the inability of a sperm cells to move normally could prevent the production of offspring by interfering with
    13·1 answer
  • If cells in the process of dividing are subjected to colchicine, a drug that interferes with the formation of the spindle appara
    12·1 answer
  • In an enzyme-mediated reaction, the activation energy will be ________ the activation energy required for a reaction without an
    11·1 answer
  • How do I find the possible blood types of someone’s baby
    9·1 answer
  • The Kelvin scale deals with extreme temperatures. What is OK equivalent to in degrees Fahrenheit?
    7·1 answer
  • Which factor increases the amount of water runoff?hurryz
    7·2 answers
  • Spores are formed in
    9·1 answer
  • The hepatitis a virus can Best be detained how
    14·1 answer
  • -6
    5·1 answer
  • Question 1 of 25
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!