-An example of observational scientific investigation is noting the color of a solution when heated.
Explanation;
-A scientific process or scientific method requires observations of nature and formulating and testing the hypothesis.
-Scientific observation is the central element of scientific method or process. Observation consists of receiving knowledge of the outside world through our senses, or recording information using scientific tools and instruments.
Stems of Vascular plants are made of vascular tissues and lignin which gives it is characteristics stiffness and the ability to grow tall to access more light and air.
