Choose the word that best completes each sentence. Echinoderms are a group of aquatic invertebrates, but they are only found in
water.

The
of an echinoderm is made of hardened plates, which make the animal feel bumpy.

The body of an echinoderm is arranged like the spokes on a wheel. This is called
symmetry.

6/12=1/2

step-by-step explanation:

d) physical means can be used to separate the components of air.

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!