What is the major factor controlling how levers work?
A) the structural characteristics of the muscles of the person using the lever
B) the weight of the load
C) the difference in the positioning of the effort, load, and fulcrum
D) the direction the load is being moved
C
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The gallbladder, liver, and stomach are all part of the
A. endocrine system. B. cardiovascular system. C. skeletal system. D. respiratory system. E. digestive system.
An example of a messenger that acts as a neurotransmitter when released from a nerve ending or a hormone when secreted by an endocrine cell is ____________________
Fill in the blank(s) with correct word
Explain the developmental processes involved in B and T cell formation
What will be an ideal response?
Scientific study of the digestive system is called __________.
Fill in the blank(s) with the appropriate word(s).