Abiologist counts the number of zebras in a population each year, and notices an increase in the zebra population. which describes the biologist’s actions? graphing inference observation interacting

Observation.

Explanation: The process of observing something in order to get information about it.

The change in the number of species an be observed by counting the number of zebras present in the population every year.

This can be observed only when the previous data is compared with the recent data.

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.

c. establishing proper sleep hygiene