How many amino acids must be obtained in the diet because they cannot be made by the body?

By means of an example, explain how poaching can conteibute to the over utilisation of a species

Domains are believed to contain magnetically charged atoms which are all in the same direction.

Which method can be used for separating a mixture of sand and salt? a. evaporation b. magnetism c. distillation d. filtration

Suppose a group of bobcats that normally live and hunt in the tops of mountains, start hunting prey at the base of the mountain and move into the valley below. Which of the following will most likely happen to the prey in the valley?

How do genes get expressed in an organism?

Which phrase defines a law? a possible explanation or answer to a scientific question that is based on prior knowledge or research and is testable A statement of fact that is generally accepted to be true and universal because it has always been

Which vessels allows for oxygen movement into the tissues

What is the difference between a physical and a chemical change

What is described by binary fission? A) The way prokaryotes move. B) The way prokaryotes produce energy. C) The way prokaryotes reproduce. D) The way prokaryotes digest nutrients.

There are many different ecological and environmental conservation methods. Which is not a conservation method? A) water harvesting B) fishing seasons and limits C) limiting of clear cutting of forests D) wind and wave erosion on coastal areas