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
mestny [16]
3 years ago
7

Birds have a _____-chambered heart. two three four

Biology
2 answers:
tester [92]3 years ago
8 0
Birds, just like humans, have a four-chambered heart.
kolezko [41]3 years ago
7 0

four. is the correct answer

You might be interested in
The ? causes seasonal variations in day length to all locations of the equator
Naily [24]

Answer:

Rotation of Earth while orbiting the sun.

4 0
2 years ago
Which of these are the two major sources of nitrate pollution in rivers? the burning of fossil fuels by factories and cars anima
snow_tiger [21]

Answer:

Animal Waste and Fertilizers

Explanation:

Animals, like humans, obtain nitrogen from consuming foods. The foods that the animals consume get digested and with time, the animals release the extra undigested foods and nutrients in forms of urine and feces. Like wise, fertilizers are typically made with animal waste.

6 0
2 years ago
Examples of an extinct organism??
Lesechka [4]

Answer:

Dodo.

Great Auk. ...

Stellers Sea Cow. ...

Tasmanian Tiger. ...

Passenger Pigeon. ...

Pyrenean Ibex. ...

Baiji White Dolphin

7 0
2 years ago
Which of these processes produce oxygen
Rasek [7]

Carbon dioxide is what humans exhale, giving trees carbon dioxide will produce oxygen

5 0
3 years ago
Read 2 more answers
Summarize the voting rights guaranteed by amendment fifteenth nineteenth. twenty-six​
exis [7]

Answer:

The Fifteenth Amendment gave the right to vote to former slaves and people of color. Well, the Nineteenth Amendment gave the right to vote to women, and the Twenty-third, Twenty-fourth, and Twenty-sixth amendments gave representation to the District of Columbia, outlaw poll taxes, and lowered the voting age to 18.

8 0
2 years ago
Other questions:
  • How many golgi bodies are in a plant cell?
    13·1 answer
  • Are there more millimeters or more centimeters in the length of a computer screen?
    6·2 answers
  • Which best describes how fossil fuels form?
    6·1 answer
  • Nerve cells are specialized to transmit chemical signals throughout the body. Some nerve cells in humans can be several feet lon
    5·2 answers
  • What happens to the chemical energy that is extracted from molecules by cellular activities but that is not used for cellular wo
    14·1 answer
  • Two organisms evolved from a common ancestor. Which process best explains why they now have different characteristics? *
    10·1 answer
  • What land plants produce most of the world's oxygen? Please help fast
    10·1 answer
  • Cross two pink snapdragons. What is the genotypic and phenotypic probability of such a cross?
    8·1 answer
  • What best describes the role of photosynthesis and respiration in the carbon cycle?
    9·1 answer
  • How would altering the ph of an ecosystem affect the organisms that live there? Relate to enzyme function.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!