Answer:
It attracts the male butterfly
Explanation:
Answer:
B. Case-Control
Explanation:
A case-control is a study that compares a group with an outcome of interest (cases) with a group who do not have the outcome (controls). This study aims to looks back retrospectively to compare how frequently the exposure to a risk factor is present in each group and with that to determine the relationship between that risk factor and the outcome.
So in this case, the cases are children with pervasive development disorder and the control is those without the disorders.
These studies are normally observational because no intervention is attempted.
In the spinal cord, the grey matter is relative to the white matter.
The level of organization is matched as:
Cell - basic unit of structure and function of all living things.
Tissue - group of cells that work together to perform a common function
organ -group of tissues that work together to perform a common function
organ system : group of organs that work together to perform a common function
Explanation:
The organ level of organization is the combination of two or many types of cells which allow a specific function to the different organs in the body.
Cell is the smallest structural and functional unit of life which has independent machinery for growth and other life processes. The next level of organization is formed at cellular level.
The tissue level organisation refers to group of cells theta are specialized for specific functions.
The organ level is when 2 or more tissues come together to perform specific functions.
The organ system: It is the assembly of organs which combine to perform a same functions for example urinary bladder, ureters, urethra and kidney makes excretory system or organ system of kidneys.
