What is the recommended range of weight gain, in lbs, during pregnancy for a normal-weight woman? ?

You should gain during your pregnancy. If you're underweight, try to gain 28-40 pounds. Normal weight? Shoot for 25-35 pounds. Overweight? Gain 15-25 If you're obese, try to put on 11-20 pounds. Expecting twins or multiples? Your goal weight goes up. Gain 50-62 pounds if you're underweight. 37-54 if you started at a normal weight. 31-50 if you're overweight. And 25-42 if you're obese. When you're pregnant with one baby, get about 300 extra calories per day starting in your 2nd trimester. You'll need more than that if you're having twins or multiples, so check with your doctor. Put on the extra pounds slowly and steadily.

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The return of the wolf to yellowstone national park will probably affect the bird population to some degree, not significantly. while wolves will hunt birds when necessary, they prefer to hunt larger prey. the bird population will most likely only be affected when hunting is scarce for the wolves. birds of prey will also probably not be affected as much as other birds who spend more time on the ground hunting for food as the tend to spend more time in the air or in trees since they do not need to stay on the ground for long due to the nature of the way they hunt.