Ijust need someone to check my answer

which characteristic is shared by all arthropods?

all arthropods have six legs.

all arthropods live on land.

all arthropods have exoskeletons.

all arthropods are insects.

The influenza virus cause the flu, but not other diseases. why?

Transmission electron microscope are best for viewing a) microorganisms in pond water b) internal organs of a mouse c)internal structures of a cell d) surface features of a specimen

Elephants in the savanna regions of africa dig holes in dried up river beds to reach water lying just below the surface. these holes provide drinking water for other animals as well. so, without the elephants, many animals might otherwise die from lack of water during the dry season. the location in which the elephants live is an example of a/n and the role they play in creating water holes is an example of a a) ecosystem; habitat b) community; niche c) habitat; niche d) niche; habitat