The process whereby organisms better adapted in to their environment tend to survive and produce more offspring.
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Answer:
The discovery of thornless plants was made around the turn of the 20th century. to name one such thornless plant, particularly, the blackberry plant, the deviation from the thorned blackberry canes were discovered in the united states. since then, several different thornless blackberry varieties have been cultivated for fruit gardens.
Answer:
A. Gas is added to the bladder as the fish's depth increases.
Explanation:
The swim bladder is a gas-filled organ localized in the dorsal region of Osteichthyes (bony fish) that allows them to regulate buoyancy, thus maintaining water depth without swimming. Since the swim bladder localizes in the dorsal region, it also functions as a stabilizing organ. This organ is composed of two sacs whose walls contract and expand in response to water pressure. The swim bladder contains an oval window that enables to adjust buoyancy in order to maintain a constant depth, or to ascend or descend in a wide range of water depths.
This should help you out! Increases with latitude as you move away from the equator to the arctic. Have a good rest of your day!