if this wave travels at speed 4m/s and the frequency and period is given in the graph, then how long is the lenght​

the pronoun reference replaces a noun, but you have to make sure there's no room for confusion.

in the first sentence "her" could be referring to shely or to the sister. the answer there is "shelly called her sister and told her about the new baby."

in the second sentence "it" could be referring to the roof or the floor. the answer there is "since the roof leaks on the family room floor, we need to repair the roof."

hello, ia m papaguy

i agree with this. also for your i have information to you.

the top 10 health concerns for children – and how to treat them

childhood obesity.

drug abuse.

smoking.

bullying.

internet safety.

child abuse and neglect.

alcohol abuse.

stress.

make sure to use those in your writing essay.

best of luck!

~

your pal papaguy

what are the questions?

btw i'm in apex to !