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Inheritance allows a subclass to weaken the security constraints of its superclass.

This image shows how your body obtains oxygen and removes carbon dioxide. What is an organ system that is involved in this process?

Which organ system sends signals to your blood vessels to cause them to contract or expand?

Electric current

Blood is a fluid connective tissue that circulates through the cardiovascular system. True or False?

Bone is a connective tissue that stores calcium and phosphate.  Answer the questions below by matching the term used to describe bone structure and cell types:

Match the image (a, b, or c) to the best description of the image. figure 

Match the best answer to the definition of Nervous System structure and function:

Haz lo que te digo Your friend is housesitting for you while you are away for spring break. Complete each of your instructions to him with the correct informal commandform of the logical verb from the word bank. The verb bank is the same for all questions in this quiz.  Use each choice only once. When required, correctly include the reflexive pronoun. When needed, type one word per answer box.                                                          á   é   í   ó   ú   ñ olvidarse ver poner leer quedarse recoger 5. La verdad es que no hay mucho que hacer.  [BLANK-1] la televisión.

Escoger los oficiosListen to what each person does at his/her job. Then choose the profession that best matches each description. Type only the letter in the blank.   2.  a.el enfermero       b.el plomero     c.el mecánico Your answer: [BLANK-1]