input: Write a function to parse a JSON object and iterate through its keys and values.
  assert parse_and_iterate({"num1": "4", "num2": "3", "num3": "2", "num4": "1"}) == ["num1 4", "num2 3", "num3 2", "num4 1"]
  assert parse_and_iterate({"a": "10", "b": "20"}) == ["a 10", "b 20"]
  assert parse_and_iterate({"x": "100", "y": "200", "z": "300"}) == ["x 100", "y 200", "z 300"]
output: def parse_and_iterate(json_obj):
      return [f"{key} {value}" for key, value in json_obj.items()]