Some plants have a waxy covering on their leaves. How does the waxy covering help the plant to survive?
O It allows the plant leaves to grow wider and collect more sunlight.
It discourages predators from eating the plant.
It helps the plant reproduce faster in colder environments.
O It helps the plant keep its moisture in hot weather conditions.

Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data

An organ system consists of a group of organs that performs specific functions necessary for the survival of an organism. humans have eleven different organ systems: integumentary, skeletal, muscular, nervous, endocrine, circulatory, lymphatic, respiratory, digestive, urinary, and reproductive. discuss the function of neurons, the brain and the spinal cord within the human nervous system while explaining the interrelationship of each organ.

What is turgor pressure, what causes it, and what does it do for a plant?