. Deoxygenated blood is carried by

Related questions

Study the following statements about ozone

---

Outline your role as an active citizen in relation to sanitation

---

Explain the relationship between sanitation and disease

---

Explain the function of bar screens in a wastewater treatment plant

---

Name two chemicals used to disinfect water

---

Untreated human excreta is a health hazard. Explain

---

What is sludge. Explain how it is treated

---

Describe the steps involved in getting clarified water from wastewater

---

Why should oils and fats be not released in the drain. Explain

---

What is sewage? Explain why it is harmful to discharge untreated sewage into rivers or seas

---

Drains get blocked by ______ and ______

---

Dried _______ is used as manure

---

Wastewater released by houses is called____

---

Cleaning of water is process of removing___

---

Micro-organisms act upon the dead plants to produce

---

Which of the following statements is not correct

---

Which of the following is not a forest product

---

Explain why there is a need of variety of animals and plants in a forest

---

Why should we worry about the conditions and issues related to forests far from us

---

The decaying leaves and animal droppings in a forest enrich the ____

---