30. What is irrigation? 31. What are the major groups of microrganisms?

32. Describe the characteristics of coke?

33. Give two example to show that plastics are non – corrosive in nature?

34. Define acid rain.

35. What is metamorphosis?

37.What are audible and inaudible sound?

38. Define cataract. give me right answer I mark you brainlest ​

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.

Ican interpret and represent the remainder in division calculations sensibly for the context (eg 27.4 in calculating average height in cm: $27.44 if it represents an amount of money) solve the following problems. 15) the wildlife park charges $25.50 dollars per person to enter their park if the park made $15096 dollars today, how many people entered the park? 16) ms adams plus 2,230 other keen runners ran a marathon: between them they ran 94817.5km. how many km did each competitor run?

Angle m aoc=108° m aob=3x+4° m boc=8x-28° find m aob