Which way should an arrow point between a producer and consumer in a food web? Why​

The arrow should be pointing from the producer towards the consumer.

Producer --> Consumer

Explanation:

The arrow represents the flow of energy in a food web. Producers are the first source of energy, as they make their own food. The energy is then transferred to the consumer when they eat the producer. For example, if a cow were to eat grass, the energy would flow from the grass to the cow. The arrow shows how this energy is flowing from the first source to the second.

explanation:

the fossil record extends back to a dog-like ancestor some 55 million years ago, which gave rise to the first horse-like species 55 to 42 million years ago in the genus eohippus.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.