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
Mice21 [21]
3 years ago
14

Why is altruistic behavior not very common?

Biology
1 answer:
Vikentia [17]3 years ago
6 0

Answer:

for any behavior to survive natural selection, it needs to help an animal or its genetic material

Explanation:

You might be interested in
The movement of organic molecules, electrolytes, minerals, and water across the digestive epithelium into interstitial fluid is
Ne4ueva [31]
Absorption would be the appropriate term to describe the movement of organic substrates, inorganic ions, vitamins, and water flowing from the epithelium to the interstitial fluid of the digestive tract. The action is a significant digestive process because the absorbed substance would be distributed to the cells via the bloodstream.
5 0
3 years ago
Why does the temperature increase in the stratosphere
tamaranim1 [39]

Answer:

The increased temperature in this layer is due mainly to UV absorption by various chemical species, including ozone and molecular oxygen present in the stratosphere. Maximum heating takes place in the upper part of the stratosphere. Because of the stable air, pollutant mixing is suppressed within this layer.

3 0
2 years ago
On the pH scale a 7 indicates ? a) a base b) an acid
Aleksandr-060686 [28]
7 is considered netural 
3 0
3 years ago
Read 2 more answers
What two lobes does the central sulcus separate?
Salsk061 [2.6K]
Parietal lobe and frontal lobe
3 0
4 years ago
Which of the letters above best models a molecule of water moving into the membrane via an aquaporin?​
nika2105 [10]

Answer:

Letter B.

Explanation:

Aquaporins, also known as "water channels," are the main transport of water through the membranes of plant, animal, and bacterial cells. These channels allow the water to travel into and within cells and, at the same time, exclude the passage of ions and solutes.

What makes letter B the correct answer, is the form of transport and shape of the channel that allow water according to the osmotic gradient. In this model, letter A shows simple diffusion, while C and D seem to illustrate gated channels.

3 0
3 years ago
Other questions:
  • HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    12·2 answers
  • Please help me do some of these whoever does the most get brainliest!​
    6·1 answer
  • from the time of my beginning, my part was made of fibrous material called collagen, which is secreted by
    15·1 answer
  • Which class of anti-HIV drug targets the virus before it enters cells?
    11·1 answer
  • Embryonic stem cells are
    5·1 answer
  • if the mass extinction event that had wiped out the dinosaurs had not occurred, could dinosaurs rather than mammals have evolved
    10·2 answers
  • Hwt points yeet yeet yeet
    14·2 answers
  • Which hormone signals body cells to take in glucose
    11·2 answers
  • What is the velocity of an object that has a displacement of 100 meters east in a time of 4 seconds?
    13·1 answer
  • Scientists are concerned that melting glaciers are exposing long frozen animals. When the ice melts, the animals thaw and begin
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!