2 Points

Which role do fish ladders serve?

O

A. They allow fish farmers to raise certain kinds of fish.

O

B. They help some kinds of fish migrate past dam barriers.

O

C. They improve the nutritional value of some kinds of fish.

O

D. They help certain kinds of fish stay physically fit.

B. They help some kinds of fish migrate past dam barriers.

Explanation:

Description

A fish ladder, also known as a fishway, fish pass or fish steps, is a structure on or around artificial and natural barriers (such as dams and waterfalls) so as to enhance diadromous fishes' natural migration as well as movements of potamodromous species.

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.

jdjxnbfb

explanation:

jjfnc fdnxnxx