What is the single most important reason
that astronomers have learned more about
our planetary system in the last 30 years than
all of history before then?
1. the Hubble Space Telescope
2. Radio telescope arrays allow astronomers
to make out details on the planets that they
have never been able to see before.
3. Astronomers today are a lot smarter than
astronomers were earlier.
4. We have been able to send spacecraft to
visit many planets and satellites.
5. The planets (moving in their slow orbits
around the Sun) hyppen to be closer to the
Earth in the last 30 years than at any previous
time in human history.

i believe the answer is c. "baking" is the gerund, while "baking blueberry muffins" would be the gerund phrase. hope this ! : )

i just learnt this recently but i need to look through my notes again

answer: e.   sour taste

explanation: acids are those substances which dissociates in water to give ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. acids are sour in taste. example: hcl

bases are those substances which dissociates in water to give ions or accepts ions. as they dissociate to give ions, they act as electrolytes and thus are electrically conductive. bases are bitter in taste. bases are slippery in nature.

you need to have a picture of the atom that way we can answer it