Overlearning"" in habituation (or below-zero habituation) can occur if . A. several different stimuli are used B. an intense stimulus is used C. habituation trials continue after the response has disappeared D. habituation trials are widely spaced over time

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.

sand 60

clay 10

silt 30

sandy loam should be dominated by the sand. as the amount of sand increased, the amount of slit needed to anchor the plants' roots to the sand will also be increased. even though the amount is very little, 10% part of clay is still necessary for proper oxidation.