Consider the following statements regarding population statistics:

1. Birth rate and death rate influence population size.

2. Immigration increases population density.

3. Emigration has no effect on population size.

   Correct option:

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#Question id: 39069

#Zoology

Which class of vertebrates shows double circulation but incomplete separation of ventricles?

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#Question id: 39069

#Life Sciences

Which class of vertebrates shows double circulation but incomplete separation of ventricles?

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#Question id: 39072

#Zoology

 Trochophore larva is characteristic of

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#Question id: 39072

#Life Sciences

 Trochophore larva is characteristic of

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#Question id: 39075

#Zoology

Assertion (A): Birds have pneumatic bones.

Reason (R): Pneumatic bones reduce body weight and aid in flight.

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#Question id: 39075

#Life Sciences

Assertion (A): Birds have pneumatic bones.

Reason (R): Pneumatic bones reduce body weight and aid in flight.