A newly hatched duck adopts the first large, moving object it sees as its mother. This is an example of ________
Fill in the blank(s) with correct word
imprinting
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What is true about the lymphatic system?
A. It exhibits peristaltic contractions. B. Fluid moves through the lymphatic system under high pressure. C. It carries all absorbed materials from the stomach and intestines to the liver. D. It is bi-directional. E. It collects fluid that seeps into the tissues and returns it to the blood.
Social organization occurs only among invertebrate animals such as ants, bees, and termites
Indicate whether the statement is true or false
While looking in a tide pool, you find an animal with a two-part shell and a large foot that it uses to bury itself in the sand. What is the likely identity of your find?
A. A gastropod B. A chiton C. A bivalve D. A cephalopod E. A snail
Which cells are divided into two groups: T cells and B cells?
(A) macrophages (B) lymphocytes (C) platelets (D) complement cells