They were mist likely following food sources.
Answer:
The blank is "energies."
Explanation:
The sentence is talking about forms so it is also referring to energy in the beginning portion of it.
The answer is 2. no plants or widely spaced plants.
Answer: Social change
Explanation:
Social change is defined as modification that occur in society in terms of order , behavior, norms and other functioning .Technology, environment , population and social institution are responsible for social canes.
According to tr question, parents tend to seek help from children for performing technological task and related activities due to social change.Today's children are well associated with handling technology, thus,they can teach parents to handle it.
Other option are incorrect because resource mobilization, social dilemma and emergent norms are not the factors in which parents seek help from turning towards kids.Thus, the correct option is social change.