Answer:Ecosystem means the biome of interacting living organisms and the environment situation. Like in the Rainforest's ecosystem :rainforest is an area of tall, mostly evergreen trees and a high amount of rainfall.
Explanation:
Answer:
Because melting can be reversed ( freezing )
Explanation:
Physical change is a change that can be reversed
<span>Pregnancy tests detect Human Chorionic Gonadotropin, or HCG, that can be found in a pregnant woman's urine. Human Chorionic Gonadotropin is secreted by the embryo and serves to maintain the corpus luteum and the production of estrogen and progesterone.</span>
