Which of the following is an observation and not an inference?
a.
a cup with steam coming from it will be hot to the touch.
b.
dark clouds in the sky will mean rain later in the afternoon.
c.
bubbles form when two chemicals are mixed together.
d.
a plastic bag moving along the ground is being pushed by the wind.

c the answer is c

Explanation:

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

i hope this you

sex cells are usually half's then they find another half and make a fertilize egg