Skin is the largest organ in your body. As a part of the excretory system it excretes waste through in the skin. A. Lungs b. An anus c. Sweat glands d. Lymph nodes

Which of the following descriptions of proteins are true? i. proteins can have different sequences of amino acids. ii. proteins can have different shapes. iii. proteins can have different numbers of amino acids. a. only i and ii are true. b. only ii and iii are true. c. only i and iii are true. d. i and ii and iii are all true. e. none are true statements

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight. which of these is most likely effect on the ecosystem?

Which label identifies the part of the atp molecule that changes when energy is released in the cells of all living things