Fracking sites release a toxic stew of air pollution that includes chemicals that can cause deserve headaches, asthma symptoms, childhood leukemia, cardiac problems, and birth defects(it can also cause cancer). Fracking increases economic activity, employment, income and housing prices.
Answer: i feel like color and size should be switched.
Explanation:
Insects, and some other invertebrates, exchange oxygen and carbon dioxide between their tissues and the air by a system of air-filled tubes called tracheae. Tracheae open to the outside through small holes called spiracles.
B- It increases the transmission of flu between countries.
A primary function of carbohydrates attached to the glycoproteins and glycolipids of animal cell membranes is to mediate cell-cell recognition. Cell-cell recognition refers to the communication between cells. specific cellular adhesion molecules enable this active process. This process leads to cell organization: <span>some cells adhere to each other and others are excluded.</span>
