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STALIN [3.7K]
3 years ago
15

Which of the following statements about bird respiration is FALSE?

Biology
1 answer:
zheka24 [161]3 years ago
7 0

Answer:D

Explanation: The pulmonary air sacs of birds only permit a unidirectional flow of air through the lungs. Unidirectional flow means that air is inhale and exhale through one trachea alternatively. This means the bird lungs only receive largely fresh air which has a high oxygen content during inhalation and do not receive fresh during exhalation. While air flow bidirectional in mammals.

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Hay más agua salada o más agua dulce
Pavel [41]
Más agua salada

Al analizar la superficie del planeta, sencillamente se puede estimar que un 71 % está cubierto de agua, y el restante 29 % es masa continental. Ahora bien, la superficie no equivale a la masa, por lo tanto no podemos afirmar que la Tierra sea un 71 % de agua y el resto de tierra. Debemos ser un poco más específicos.
3 0
3 years ago
Where does the fertilized egg grow and develop while a woman is pregnant
Scilla [17]

Answer: Uterus

Explanation:

A fertilized egg is called ZYGOTE, and it is the product of fusion between a sperm cell and ovum cell.

The zygote is attached and housed in a muscular organ known as Uterus, commonly referred to as Womb. Here, the zygote grows and develops for several weeks into a foetus and then a human child (baby) in the pregnant woman

6 0
4 years ago
1.What process can cause rock to move deep underground?
atroni [7]

Answer:

1.) "Erosion is a mechanical process, usually driven by water, wind, gravity, or ice, which transports sediment (and soil) from the place of weathering. Liquid water is the main agent of erosion. Gravity and mass wasting processes move rocks and sediment to new locations."

2.) "Weathering describes the breaking down or dissolving of rocks and minerals on the surface of the Earth. Water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. Once a rock has been broken down, a process called erosion transports the bits of rock and mineral away."

Explanation:

Hope this helps :))
.. if not sorry :(

4 0
3 years ago
Read 2 more answers
Macromolecules are ________ that is made of small repeating patterns called _______?
OverLord2011 [107]

Answer:

A macromolecule is a very large molecule, such as protein, commonly created by the polymerization of smaller subunits (monomers). ... The most common macromolecules in biochemistry are biopolymers (nucleic acids, proteins, carbohydrates and lipids) and large non-polymeric molecules (such as lipids and macrocycles).

Explanation:

6 0
4 years ago
In multicellular organisms, meiosis is:
ss7ja [257]

Mr. Knowitall is wrong, the correct answer is C.

-able to occur in only a few cells of specialized tissues

(just had the same question on a test)

3 0
3 years ago
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