The answer is bonds between atoms break and new bonds form. In order for a chemical change to happen, a new substance/substances (products) have to form that have different properties from the reactants. The bonds in the reactants break and new bonds form in the products.
Hope this helps
Genetic variation can<span> be </span>caused<span> by </span>mutation<span> (which </span>can<span> create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).</span>
The answer of the first question is double fertilization !!! I don't get the second question so.... comment if you have that question !!!
Answer:
I think because the people with more weight applies more friction to the ground and that causes the sole to worn out faster than the thin people
Explanation:
Saya tak tau sangat sebab saya baru tingkatan 2. I hope it really helps you
