The right option is; unsecured loan
Zachary's student loans are an example of unsecured loan.
An unsecured loan is a type of loan that is given and supported only by the borrower’s reliability without being protected by any collateral. If an individual is unable to pay the loan, the lender cannot take his or her property. Types of unsecured loan include student loans, credit cards and personal loans.
A chromosome contains one long DNA strand.
B.
H1 Flu since those are mostly the symptoms of that kind of flu
Fish and bird are biotic and the bird would hurt the fish depending on the species of birds since some birds are carnivores.
One will be due to climatic change or it might be coz of evolution