Which of the following is an example of an interaction between the skin and nervous systems? a. the heart beat of a person increasing when he is scared b. the digestion of food and release of energy c. a person feeling hungry or thirsty d. a person feeling the heat of a fire

What re the two main phrases of the cell cycle.

The serengeti plains are part of the african savanna ecosystem and are home to a variety of different species of plants and animals. the serengeti plains experience a seven-month period of seasonal drought each year, during which the ecosystem receives only four inches of rain and the availability of some resources becomes very scarce. which type of limiting factors does the seasonal drought in the serengeti plains affect?

What class of levers is shown in this image?