When a mother bear nurses a cub, she gives the cub what it needs for growth and development in the form of milk or food, which is the cub's source of?

B. Engrey

Explanation:

Fetuses develop only if the mother has stored enough body fat and other milk for her cubs until she resumes feeding in spring (nature's way of bear. With the full time babysitting job keeping the mother bear awake, nursing mothers often lose a do not begin eating solid food until their chewing teeth erupt later in spring. Hope this helps you! Please like this answer. Thanks and have a Merry Christmas eveyone!

mammal

explanation: