Cellular membranes are self-sealing. If they are punctured mechanically, they quickly and automatically reseal. What are the properties of membranes that are responsible for this important feature

Which ideas did your answer contain? check all that apply. no food for organisms no oxygen in the atmosphere no trees or flowering plants no products based on trees or plants (building materials, medicines, fuels, fibers) no fossil fuels

Which is the correct order in the scientific process? ask a question ® form a hypothesis ® make an observation ask a question ® make an observation ® form a hypothesis make an observation ® form a hypothesis ® ask a question make an observation ® ask a question ® form a hypothesis

Read each description below and determine to which stage of sleep each pertains. then click and drag each box into the appropriate category below.