A child blows up a balloon with air, the balloon will not float to the ceiling because

What will be an ideal response?


the balloon and the air it contains weight more than the air displaced by the ballon

Biology & Microbiology

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Which scientist published the book titled, “Systematics and the Origin of Species” in 1942?

a. Charles Darwin b. Gregor Mendel c. Ernst Mayr d. Charles Lyell e. Carolus Linnaeus

Biology & Microbiology

Visual accommodation involves the ability to ____

a. change the sensitivity of the rods and cones by means of neurotransmitters b. change the position of the retina c. change the thickness of the lens by contracting or relaxing certain muscles d. protect the eyeball from foreign matter e. prevent eye strain

Biology & Microbiology

Most of the tallgrass prairies have been

converted a. to grazing lands. b. for citrus production. c. to homesteads. d. to croplands. e. to vineyards

Biology & Microbiology

When water molecules "stick"to something that is not another water molecule, this is called

A. adhesion. B. water pressure. C. cohesion. D. root pressure. E. pneumatophores.

Biology & Microbiology