Researchers have found that wolves try lots of different trial and error tactics to solve the problem— they get at it physically. But at the first sign of trouble, dogs do something different. They look back to their human companion for help. This work hints that dogs may have lost some of their physical problem-solving abilities in favor of more social strategies, ones that rely on the unique sort of cooperation domesticated dogs have with humans. This also matches the work showing that dogs are especially good at using human social cues. Hope I’ve helped ;)
Answer:
B. D. and A.
Explanation:
because of the mother smoking while she's pregnant and it could also give her a chance to while giving birth
Nutrient recommendation that meets the nutrient requirements of 97 to 98 percent of healthy people
provides a reference chart for people following either a 2,000 calorie or 2,500 calorie diet.
