How do scientists measure wildlife population such as rabbits?

They plot out a given area, such as 500 acres. They pick a section, maybe 100' X 100' square, and set live traps.

After catching the rabbits, they do a count and note sex, age, health. and size, then turn them loose. The number of rabbits caught, times how many 100' X 100' sections there are in 500 acres, gives them the approximate amount of rabbits in that 500 acre area.

This kind of thing is done for most animal populations, except for those that can't or shouldn't be caught. Those animals are often counted by observation or by photography and then multiplied by the given area as I said.

-- From Google.

explanation:

yes you are doing it right great gob

spiders belong to a group of arachnids.

arachnids have the following traits :

they have two body parts.

they have eight legs unlike insects which have 6 legs.

they have no wings.

these traits distinguish them from insects.

the information that antonio is doubting us the statement that spiders differences are as a result of being first to evolve.

this is because the evolution of one species is independent of the other species.