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
Sladkaya [172]
3 years ago
7

What is a keystone species?

Biology
1 answer:
gizmo_the_mogwai [7]3 years ago
3 0
D. A keystone species existence keeps an ecosystem in balance.
You might be interested in
Jermaine was hiking in the rocky mountains for the first time and became sick. At the hospital, he was diagnosed with sickle-cel
Tom [10]

Sickle cell disorder is an inherited blood disease featured by defective hemoglobin. The condition affects the hemoglobin, or the red blood cells, and their tendency to conduct oxygen. The normal hemoglobin cells are round, smooth, and flexible, and thus, they can travel via the vessels in the body effortlessly.  

On the other hand, the sickle cell hemoglobin cells are sticky and stiff and form a sickle, C shape, when they lose their oxygen. These cells combine together, and cannot effortlessly move through the blood vessels.  


8 0
3 years ago
What energy is energy that has not yet been used
Makovka662 [10]

Potential energy or stored energy.

7 0
3 years ago
Read 2 more answers
What happens after activation of T cells<br>​
NikAS [45]

Answer:

Helper T cells are arguably the most important cells in adaptive immunity, as they are required for almost all adaptive immune responses. They not only help activate B cells to secrete antibodies and macrophages to destroy ingested microbes, but they also help activate cytotoxic T cells to kill infected target cells.

Explanation:

Helper T cells become activated when they are presented with peptide antigens by MHC class II molecules, which are expressed on the surface of antigen-presenting cells (APCs). Once activated, they divide rapidly and secrete cytokines that regulate or assist the immune response.

8 0
2 years ago
The failure of chromosomes to separate during meiosis, resulting in an abnormal karyotype like the one shown, is called
Pavlova-9 [17]
The answer is non disjuction
4 0
3 years ago
Help me im confused
mrs_skeptik [129]
Neither brain nor the Muscles
8 0
3 years ago
Read 2 more answers
Other questions:
  • What are some opinions on evolution?
    13·1 answer
  • A. Most plants in the ditch will be plants with long roots.
    9·1 answer
  • The law of supply suggests that the price elasticity of supply is
    7·2 answers
  • The larval forms of a tapeworm are known as ________.
    9·1 answer
  • Which of the following are part of the water cycle? 1.transpiraton 2.precipitation 3.sedimentacion
    11·2 answers
  • Help asap plsss no link or websites I think brainley has a bot problem
    6·1 answer
  • Help please I don’t understand anything..!!??!!!!
    6·1 answer
  • How does blood connect to the cardiovascular system ?
    10·1 answer
  • A.
    7·1 answer
  • Which place cuts though the continental margins?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!