The discovery of isotopes led to the discovery of which part of the atom

neutron

Explanation:

Before the discovery of neutron by Chawick, Thomson discovered the atom and in later researches he also discovered the electron as negatively charged particle residing outside the nucleus of any atom but he could not find neutron by then.

Later on with the discovery of isotopes, Chadwick also proposed the discovery of neutron and he explained that isotopes of same element consists of same electron and proton number but have varying neutron number.

1. glaciers are melting

2. more water going into ocean (water's such as fresh waters, etc)

image result for describe the various types of gene mutationsghr.nlm.nih.gov

the types of mutations include: missense mutation: this type of mutation is a change in one dna base pair that results in the substitution of one amino acid for another in the protein made by a gene. nonsense mutation: a nonsense mutation is also a change in one dna base pair.

explanation: