If we had no cilia in our trachea, our lungs would be filled with dust and microorganisms that we breathe in.
Answer:
The correct answer is multicellular organisms.
Explanation:
Organs are differentiated structure formed by group of cells and tissues to perform the similar functions. When more than two organs perform specific function in a coordinated manner they form organ system.
Tissues and organs are a characteristic feature of multicellular organisms as more than one cell is present in these organisms and these cells aggregate together to form tissues, which further aggregate to form different organs carrying out the different functions attaining complexity.
Since, unicellular organisms do not have more than one cell, unicellular cells do not form tissues and lack organs.
Thus, the correct answer is multicellular organisms.
which is absent in unicellular organisms.
The pear is healthy because it contains more vitamins, minerals and fiber. Carbohydrates are the main source of energy in human diet. All the body cells depend on glucose which makes it the preferred source of energy. The brain and the nervous system for example run directly off glucose. The body can convert protein to glucose during the low supply of glucose in the body.
1. (C) estimating the distance to an unfamiliar object.
2. (C) hominoids
3. (B) in trees
4. (B) was found with tools made from stone and bone.
5. (A) support the multiregional model.
