PLEASE HELP 16
The word arthropod comes from the Greek words meaning spiny skin.
a. true
b. false
17
Insects have four pairs of walking legs.
a. true
b. false
18
Grasshoppers have five eyes.
a. true
b. false
19
An insect's compound eyes can detect only light and dark.
a. true
b. false
20
Social insects cannot survive alone.
a. true

Which of the following is true of microbes? a. ninety-nine percent of all microbes are pathogenic. b. gene expression in bacteria is very similar to gene expression in humans, which facilitates the use of bacteria in recombinant biotechnology and gene therapy. c. all bacterial enzymes are harmful to humans and the environment. d. microbes create pollutants and toxins that harm the environment.

In iceland, the mid atlantic ridge runs through the center of the contry. what can you conclude about the apperence of iceland many thousands of years from now?

Which organelles are labeled d, and what is one feature that distinguishes them from the other labeled organelles chloroplasts the only organelles that produce sugars from sunlight mosomes, only found in animal and bacterial cells centricles only found in animal cells mitochondra, the only energo-generating structures found in cells