Which of these is true of echinoderms
a. they have heads.
b. they have radial symmetry.
c. they have shells.
d. they have smooth skin.

the answer to your question is slate

enhanced global partnerships and exploration capabilities may advance international preparedness for protecting the earth from catastrophic events such as some asteroid strikes, advancing collaborative research on space weather and protecting spacecraft by developing new means for space debris removal.

your body is trying to warm itself up. or more precisely, sensors in your skin send messages to your brain to generate heat to your body.