A land developer and several ecologists are discussing how a parcel of private land should be developed with housing while saving 20 hectares as natural habitat. The land developer suggests that the 20 hectares be divided into 20 separate 1-hectare areas, spread out across the area. The ecologists suggest that it would be better to have one intact parcel of 20 hectares on one side of the larger area. What is the significance of these different arrangements of the 20 hectares?

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#Question id: 10991

#Unit 7. System Physiology – Animal

When recording lead I on an EKG, the right arm is the negative electrode, and the positive electrode is the

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#Question id: 8920

#Unit 9. Diversity of Life Forms

Almost all of the major animal body plans seen today appeared in the fossil record over 500 million years ago at the beginning of the

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#Question id: 22973

#Unit 7. System Physiology – Animal

Which enzyme converts 25-hydroxycholecalciferol to the active form, 1,25-dihydroxycholecalciferol.

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#Question id: 10681

#Unit 10. Ecological Principles

Which of the following is not condition for commensalism?

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#Question id: 12703

#Unit 8. Inheritance Biology

In the plants, due to mutation in the mitochondrial genome causing cytoplasmic male sterility can be influenced by the nuclear gene (Rf),  which is dominant over the cytoplasmic mitochondrial genome. If a male sterile plant  is pollinated by the fertile male plant with homozygous (Rf)condition, the progeny obtained in F1 will have