What is meant by differentially permeable membrane?

Agroup of students are walking in the park, and one of them takes a picture of a pollen grain that is being blown by the wind.what caption can the student use for this picture? fahrte "littl1111111nimmt-hhhfull film# # #gene mutation in actiongene flow at workgenetic drift as it happensnatural selection in progresshii

What is a group of organisms that are closely related and share similar characteristics

Explain how scientists use geologic time to determine the age of landforms.