Invertebrates

No

Yes. It has a shell.

Invertebrates have no backbone, vertebrates do.

Invertebrates often have a hard external shell (like a mussel), or exoskeleton (like a crab), to protect them from predators.

we can save it by starting to compost all garbage and paper in compost bins instead of throwing it in the lakes and rivers and oceans and lakes of the world.

it depends on it there are ver & invertebrate

becouse we kill them

vertebrates are fish, and invertebrates are slugs

No, mole's are vertebrates, like all mammals.

Jaws evolved from the gill bars on fish.

The evolutionary order of invertebrate phyla are sponges, cniderians, and bilaterians. The origin of invertebrate phyla begin in the Precambrian times.

Yes

the sea anemone have radial symmetry

invertibrates

3

This is not the site to write the name of all invertebrates. It is too long and too invloved. I suggest you look in your science book.

Long eared jerboas, a type of small rodent, are mammals, and all mammals are vertebrates.

Because most of it may be fertilized by sperm from the male invertebrate.

protozoa

Plankton can be found in the Pelagic zone of oceans, seas, and bodies of fresh water.

if they didn't, how would they absorb blood from external sources?
though, if the blood enters their circulatory system is another question.

jellyfish because they love to eat

They're advanced over their ancestors - worms - by having that new and useful sructure, the articulated leg.

Earthworms

It is called the mesoglea, or the middle layer between the outer ectodermal tissue and the inner gastrodermal tissue. Jellyfish are considered diploblastic, or two tissued. A secretional, gelatinous substance makes up the mesoglea and it provides the jellyfish with several benefits. Since it is less dense than the cellular parts of the organism, it allows the jellyfish to have neutral buoyancy. It also gives the bell some rigidity, and the ability to spring back after muscular contractions.

Jellyfish.