The alveoli are surrounded by tiny blood vessels, called capillaries carrying blood to and from the heart.
Answer:
C. habituation trials continue after the response has disappeared.
Explanation:
habituation involves the complete elimination of a particular response (i.e, zero frequency of occurrence). If the stimulus cintinues to be presented for an additional number of trials, then, although no further changes occur, the response will exhibit lower levels of recovery (e.g, spontaneous recovery is reduced) as if the response would have fallen below a zero frequency.
B: things made of a single atom
Answer: Photosynthesis
The picture shows the chemical equation the reactants are before the arrow the product is after.
The yellow lines at the top is sunlight
Answer:
Paper is not a natural resource