Human Body Systems
This organ system is responsible for the exchange of oxygen and carbon dioxide between the blood and the air.
Respiratory System
Charles Darwin proposed this mechanism of evolution, where individuals with favorable traits are more likely to survive and reproduce.
Natural selection
The term used to refer to an organism that has two different alleles for the same trait.
Heterozygous
This property of water allows it to dissolve many substances, making it essential for delivering nutrients to human cells.
A universal solvent/polarity
An environment is said to have reached this when the growth and immigration rate is equal to the death and emigration rate.
Carrying Capacity
Being exposed to a stomach virus and producing your own antibodies to prevent future illness is an example of this type of immunity.
Active immunity
Clue 1: In an ecosystem, these organisms occupy the very first trophic level because they can make their own food using sunlight or chemicals.
Producers
These "chemical messengers" are produced by the Endocrine System and travel through the blood to regulate things like growth and metabolism.
Hormones
Anatomical structures, like the human tailbone or whale pelvic bones, that have lost their original function over time are called this.
Vestigial structures
This part of the brain, often called the "master regulator," links the Nervous System to the Endocrine System to control body temperature and hunger.
Hypothalamus
These are the two primary abiotic factors that determine the specific type of terrestrial biome that will exist in a geographic region.
Temperature and precipitation