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
aleksandr82 [10.1K]
3 years ago
9

Why are some birds incapable of flight?

Biology
2 answers:
Crank3 years ago
7 0

Answer:

Ostriches, emus, cassowaries, rheas, and kiwis can't fly. Unlike most birds, their flat breastbones lack the keel that anchors the strong pectoral muscles required for flight. Their puny wings can't possibly lift their heavy bodies off the ground.

Explanation:

icang [17]3 years ago
4 0

Answer:

cuz they're fat and their wings are small

Explanation:

their flat breastbones lack the keel that anchors the strong pectoral muscles required for flight

they lost the ability to fly through evolution because flying was no longer needed

You might be interested in
From the pulmonary veins, blood flows to the _____.
lana [24]

Answer:

the right atrium.

Explanation:

Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium.

8 0
2 years ago
Which of the following is true about a sea star's DNA?
jonny [76]

Answer:

The answer is: All of the cells of the sea star have the same exact DNA (I think)

Explanation:

8 0
2 years ago
(20 POINTS + BRAINLIEST) What process must happen before this process depicted below?
Lilit [14]

glycolysis takes place in cytoplasm and can occur without the presense of oxygen and is primary energy source of most organisms        

3 0
3 years ago
Read 2 more answers
What nineteenth-century invention led to the expanded use of hydroelectric power?
Dimas [21]

Turbines. Invented by Charles Parsons. I know I'm in middle school, but we are just learning about hydroelectric power.

5 0
3 years ago
Read 2 more answers
1. Compare and contrast a food chain and a food web.
tigry1 [53]
In comparison they both show feeding relationship in an ecosystem.
In contrast, a food chain is a simple linear feeding relationship while a food web is a complex feeding relationship.

2) The arrows is to show the direction of the feeding relationship
8 0
3 years ago
Other questions:
  • 1. number and variety of species on Earth
    5·2 answers
  • Research the process of erythropoiesis, and explain the role erythropoietin plays. Why is this a popular "doping" drug for athle
    11·1 answer
  • an explanation describe if an orange pet mates with another orange pet, can they have any green offspring.
    14·1 answer
  • Several years ago, fish from Asia were introduced into ponds in the United States. They have rapidly grown in numbers and use up
    7·2 answers
  • In which specimen were cells first identified?
    6·2 answers
  • Many poisonous mushrooms are extremely colorful. One hypothesis is that the colors serve as a warning to prevent animals from ea
    10·2 answers
  • BRAINLIESTTTT ASAP!!!
    8·1 answer
  • Match with the correct pattern of inheritance.
    7·1 answer
  • The cytoplasm and two nuclei that are formed during mitosis are separated into two identical daughter cells during _______. A. P
    6·1 answer
  • Why are microorganisms used to produce enzymes?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!