Question

fill in the blanks:

(1) ______animals are called as 'acorn worms'.

(2) human show _______ body organization.

(3) pesticides poison enters the food web and it's _______ occurs.

(4) methods like artificial insemenation and embryo-transplant are mainly used for ________.

Answer 1

(1) THE

(2)Summary. The human body is organized at different levels, starting with the cell. Cells are organized into tissues, and tissues form organs. Organs are organized into organ systems such as the skeletal and muscular systems

(3)

(4)