The appropriate answer is doing. All of the above. Heavy metals are sometimes used in agricultural chemicals and can contaminate both terrestrial and aquatic ecosystems. Heavy metal concentrations can build up overtime as industrialization progressed. Chemical spills can introduce heavy metals to ecosystems quickly with devastating effects.
Answer - A
Prokaryotic cells, being unicellular organisms, do not have a defined nucleus. They have a nucleoid in place of the nucleus which is formed of a single chromosome consisting of double stranded DNA.
Answer:
hemoglobin will bind more oxygen when the partial pressure is low than when the partial pressure is high.
Explanation:
Binding of hemoglobin to oxygen is regulated by several factors. However, the partial pressure of oxygen is the most important factor that determines how much oxygen will bind to hemoglobin. When the partial pressure of O2 is high, hemoglobin binds with large amounts of O2. On the other hand, when the partial pressure of O2 is low, hemoglobin is only partially saturated.
Therefore, the greater the partial pressure of oxygen, the more O2 will bind to hemoglobin until saturation is reached. This is why a lot of O2 binds to hemoglobin in pulmonary capillaries where the partial pressure of oxygen is high.
The correct answer is B. Plants absorb phosphates and sulfates which are present in the soil through their roots.
Sulphate is termed as ion which is a polyatomic anion which are salts made of sulphuric acid
Both phosphorus and sulfur are natural occurring elements and they are needed for reproduction and growth by plants.
coil, oil and gas, cause pollution
Which damages the environment, also melts thw glaciers so animals such as polar bears lose their habitats and will come extinct at some point.... hope this helps
