Answer:
An organ or bone that appears in different animals.
Explanation:
A homologous structure is an example of an organ or bone that appears in different animals, underlining anatomical commonalities demonstrating descent from a common ancestor. In other words, it's when very different animals have bones that appear very similar in form or function and seem to be related.
Answer: The excretory system is largely associated with the urinary, or renal, system. This system consists of various organs that produce and then excrete the urine out of the body: the kidneys, ureters, the bladder, and the urethra. They include the kidneys, large intestine, liver, skin, and lungs. The kidneys filter blood and form urine. They are part of the urinary system, which also includes the ureters, bladder, and urethra. Each kidney has more than a million nephrons, which are the structural and functional units of the kidney.
Explanation:
It controls it. The brain is the CENTER of the nervous system, meaning that it sends all the signals to everything and tells them what to do. Without the brain, nothing would happen, and you would die.
Turtles
Reducing the amount of artificial light that is visible from nesting beaches is the first step to reducing light pollution that affects sea turtles.
Snakes
when snakes are in the sunlight they can gain alot of energy and heat and they can stay warm for a long time.
I dont realy know about the other two