2. Chamber A contains 40% helium and Chamber B contains 20% helium. Chambers are connected by a tube
the molecules are free to cross. Which of the following will
occur?
O some helium will move from chamber A to chamber B
O some helium will move from chamber B to chamber A
O helium will remain concentrated in chamber A
O all of the helium will move into chamber B

The asian shore crab (hemigrapsus sanguineus) is an invasive species that has impacted the atlantic coast. predict what characteristic of this invader would most likely disrupt the biodiversity of this area.

Which of the following statements is correct in hour our immune system responds to a potential pathogen? a. the adapted immune system will call on the innate immune system to destroy the pathogen. b. b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c. the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. d. the t-cells in the adapted immune systems are the first to recognize the pathogen vaccines are weakened forms of disease causing microorganisms, which are given to patients to prevent disease. after the vaccine is administered, the immune system responds by creating a(n) to recognize the a. antigen, antibody b. antibody, antigen c. antibody, antibiotic d. antibiotic, antibody

Choose the diagram that best represents a habitat corridor explain your choice.