Two trains is moving in opposite directions at 70 kmph and at 80 kmph. Their lengths are 1.3 km and 0.7 km respectively. The time taken by the slower train to cross the faster train in seconds is:

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#Question id: 28212

#Unit 5. Developmental Biology

Activin is a___

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#Question id: 1616

#Unit 4. Cell Communication and Cell Signaling

Acute inflammation characteristically involves:

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#Question id: 12557

#Unit 10. Ecological Principles

Natural selection involves energetic trade-offs between

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#Question id: 2006

#Unit 4. Cell Communication and Cell Signaling

In Cases 1 and 2 in the table, the mothers would be able, if needed, to supply blood to the newborn even 7-9 months after birth; the same would not be true for Case 3. Why?

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#Question id: 2141

#Unit 2. Cellular Organization

Facilitated diffusion through a biological membrane is: