Does the doppler shift occur for only some types of waves or for all types of waves? only sound waves all types of waves only light waves

Which feature of a human community is similar to a niche in a biological community

Which of the following statements about protists are true? a. they are typically found in moist environments. b. they are all unicellular. c. they have a nucleus. d. they are all multicellular.

Which of the following forest management practices is best for reestablishing areas of forest?