Answer:
they are transmitted by one person to another, like kissing, coughing, sneezing, or any physical contact from the infected person to someone who's not.
both are smart and can use there hands for grabing things and some can use sign language to humans
They absorb photons from sunlight
<span>You would know you were in the troposphere if you see stuff like the clouds because it is earths lowest layer. </span>
