Which human activity pollutes lakes and rivers?

a fishing in lakes and rivers

b swimming in lakes and rivers

c discharging wastes into lakes and rivers

d using water for consumption from lakes and rivers

The oxygen atom in a water molecule has a slightly negative charge due to its polarity. True or false

Which of the following is a photosynthetic pigment molecule that absorbs blue and green light but transmits yellow, orange, and red light? A-carotenoid B-rubisco C-chlorophyll a D-chlorophyll b

Ethanol is produce during what process

What is homeostasis? a. production of urine. b. maintaining a stable internal environment. c. excretion of waste materials. d. none of the above.

Which of the following factors is least influential in affecting the biodiversity of wetlands?

It is good practice to autoclave all cultures before disposal, even if the culture is of a non-pathogenic organism. Autoclaving not only kills the cells in the culture, but denatures and destroys proteins and nucleic acids.

He wanted to observe cells in the fish's eye, but he saw nothing. Explain why.

Which technology has allowed for exploration beyond our solar system?

Which important property of DNA did Friedrich Miescher discover? -It is made partly of sugar molecules. -It has a double-helix structure. -It is three-dimensional. -It is found in the nucleus of a cell.

2. What is meant by predation? What is the relationship between a predator and a prey?