Sh The plecostomus is popular among aquarium owners
for its ability to remove algae. It uses its strong jaw
muscles to suck food off rocks and other surfaces, like
the glass of a fish tank. The swim bladder allows the
plecostomus to stay easily wherever there is food,
often near the bottom of the tank. The plecostomus has
large scales and a hard skeleton.
To which group of fish does the plecostomus belong?

Aflashlight produces light using energy from the batteries. in which order does the energy change form? a. from chemical to electric to light energy b. from electric to light to chemical energy c. from electric to chemical to light energy d. from light to electric to chemical energy

Mention true or false : a) cholera is marked by acute diarrhea and no urination. b)mosquitoes are the source of dysentery germs.

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.