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frozen [14]
3 years ago
10

A bird flies by moving its wings up and down. Which two systems are most directly responsible for the movement of a bird's wings

?
A bird flies by moving its wings up and down. Which two systems are most directly responsible for the movement of a bird's wings?
A.
respiratory and muscular systems
B.
skeletal and digestive systems
C.
respiratory and digestive systems
D.
skeletal and muscular systems
Biology
1 answer:
Montano1993 [528]3 years ago
6 0

Answer:

D

Explanation:

skeletal and muscular systems

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The galaxies are moving away from Earth because the fabric of space itself is expanding. While galaxies themselves are on the move — the Andromeda Galaxy and the Milky Way, for example, are on a collision course — there is an overall phenomenon of redshift happening as the universe gets bigger.

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What is do scientists look for when classifying organism​
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they look at characteristics, such as their appearance, reproduction, and movement, to name a few.

Explanation:

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Many wants to increase the yield of herd garden. A friend suggest that she pinch of the tops of the plants as the grow by cuttin
exis [7]

Yes, the pinch of the top of plant in growing time by cutting through apical meristem is helpful for creating the cells and it is also helpful for growth of plant and for the increase in the yield of garden.

Explanation:

Apical meristem is below the surface of the branches and also the roots. Some cells are divided through this process but some other cells are differentiated and divided into structural or vascular cells. There are mainly two types of apical meristems based on its location present in plant. The root apical meristem and shoot apical meristem.  

5 0
3 years ago
How many microliters of original sample are required to produce a final dilution of 10-3 in a total volume of 1,000 mL?
PIT_PIT [208]

Answer:

10^{9}\ \mu L

Explanation:

Considering

Molarity_{1}\times Volume_{1}=Molarity_{2}\times Volume_{2}

Given  that:

Molarity_{1}=1.0\ M  (let)

Volume_{1}=1000\ mL

Volume_{2}=?

Molarity_{2}=0.001\ M

So,  

1.0\times 1000=0.001\times Volume_{2}

Volume = 10⁶ mL

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So, Volume = 10^{9}\ \mu L

3 0
3 years ago
The two main phases of the cell cycle are the cytokinetic phase and interphase
Vitek1552 [10]

Answer:

Flase

Explanation:

The cell cycle has two major phases: interphase and the mitotic phase. During interphase, the cell grows and DNA is replicated. Usually the cell will divide after mitosis in a process called cytokinetic in which the cytoplasm is divided and two daughter cells are formed.

hope this helps

have a great day/night :)

4 0
3 years ago
Read 2 more answers
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