send information from your brain to your muscles. Motor neurons Glial cells Afferent neurons Sensory neurons

80. Deficiency Which the following nutrients causes retarded * 1 point growth in plants? A)lron B)Magnesium c)Copper D)Calcium 81. Which of the following are examples of macro minerals? * 1 point (a) Sodium (b) Calcium (c) Chloride (d) All of the above

1 สายใยอาหารนี้ประกอบไปด้วยกี่โช่อาหาร

82. Which of the following minerals controls growth and body * weight? (a) lodine (b) Calcium (c) Phosphorous (d) All of the above 83.Chemical digestion of carbohydrates begins in the * A. esophagus B. stomach C. duodenum D. oral cavity

Mining contributes significantly to the economies of West African countries. What is a major environmental issue associated with gold mining in Ghana? a. Mercury contamination in rivers and groundwater b. \( \begin{array}{l}\text { Depletion of coastal wetlands due to } \\ \text { excavation }\end{array} \) c. \( \begin{array}{l}\text { Overgrazing of land used for mining } \\ \text { settlements }\end{array} \) displacement of forest-dwelling communities

1 สายใยอาหารนี้ประกอบไปด้วยกี่โซ่อาหาร .... 2 ผ้ผลิต ในสายใยอาหารนี้ มีกี่ชนิด