Explain the causes of mortality in day-old chicks, identify decomposers in a forest ecosystem, describe the function of parts of the mammalian ear, and list ways to demagnetize a magnet.

Hey Gal, good to see you again. b) Five causes of mortality during brooding of day-old chicks are: • Starvation or dehydration due to inability to find food or water. • Temperature stress (chilling or overheating) due to improper brooder temperature. • Diseases such as Coccidiosis or Salmonella. • Poor ventilation leading to ammonia buildup. • Predation by other animals or cannibalism among chicks. c) i) Decomposers are organisms that break down dead organic matter, returning nutrients to the ecosystem. ii) Four examples of decomposers in a forest ecosystem are: • Fungi (e.g., mushrooms, molds) • Bacteria • Earthworms • Insects (e.g., millipedes, certain beetles) d) The function of each part of the mammalian ear: i) Pinna: Collects sound waves and directs them into the ear canal. ii) Cochlea: Converts sound vibrations into nerve impulses that are sent to the brain. iii) Eustachian tube: Equalizes air pressure between the middle ear and the outside atmosphere. iv) Semi-circular canal: Detects rotational movements of the head and helps maintain balance. e) i) Demagnetization of a magnet is the process of reducing or completely removing its magnetic properties. ii) Three ways a magnet could be demagnetized are: • Heating it above its Curie temperature. • Hammering or dropping it repeatedly. • Placing it in an alternating magnetic field and slowly withdrawing it. f) i) A hazardous substance is any substance that can cause harm to human health or the environment due to its chemical or physical properties. ii) One example for each: () Corrosive household substance: Bleach* () Inflammable laboratory substance: Ethanol* () Toxic laboratory substance: Mercury* g) i) Explanation of breeding systems: () Hand mating: This is a controlled breeding system* where the male and female animals are intentionally brought together by a handler for mating. It allows for precise record-keeping and selection of breeding pairs. () Pasture mating: This is an uncontrolled breeding system* where male and female animals are allowed to roam freely together in a pasture, and mating occurs naturally without direct human intervention. Send me the next one 📸