Question 13 (2 points) Which particles are located in the nucleus of the atom? (2 points)
O a
Neutron and electron
b
Neutron and proton
Ос
Proton and electron
Od
Only neutron
Question 14 (2 points)
A student thinks that halogens are highly reactive because their electrons are weakly attracted to their nuclei.
this student's idea? (2 points)

human-caused climate hope this

the answer is b.) hydrogen bonds between bases.

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation: