Worksheet 5 A. Fill in the blanks. 1. The ability of an organism to fight against infections and harmful substances is called 2. The cells produce antibodies in response to an antigen 3. Some common examples of are dust, mould, pollen, insect stings and nurs and get swollen 4. During an asthma attack, the B. Name the four tests that are used to check if someone is allergic to a substance.

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

fumikage isn't really a bird, and tsuyu does have teeth. tsuyu has a transformation quirk which still allows her to be partially human. otherwise we'd have a large frog running around. fumikage has teeth because again, he isn't a bird. his head was a quirk mixture if i'm correct.