Identify how the physical barriers of the immune system protect the body against pathogens. check all that apply. 1. your nose produces oil to keep pathogens from entering the body through your nose 2. skin contains tightly packed cells 3. skin is tough, flexible, and waterproof 4. you cough when a pathogen enters your mouth 5. you sneeze when a pathogen enters your nose

≅200-130 milions years ago pangea splited in 2 continents

interphase   is the cell cycle stage in which the cell acquires nutrients, creates and uses proteins and other molecules and starts the process of cell division by replicating the dna. it is the longest stage in the eukaryote cell cycle.

the following   can go wrong during interphase:   a base pair could be mismatched during the duplication process causing a mutation.   correct answer: c

explanation:

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.