Which one of the following erosional features from a glacier creates scratches/parallel grooves in a rock generally in a North/South direction?

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

What is gene flow? apexa: selection for average traits b: when a population splits in twoc: a mutation becoming more commond: genes moving between two populations

Match the order of the levels of organization in nature with the correct description. example: atoms are fundamental units of matter= level 1levels- 2,3,4,5,6,7,8.now what levels are these? population consists of organismscells consist of moleculesecosystems consist of communities interacting with there environmentmolecules consist of atomsthe biosphere consist of all ecosystems on earthcommunities consists of populationorganisms consist of cells