Answer:
Explanation
Water in a lake freezes from the bottom up, killing most aquatic organisms. When water in a lake freezes, it floats, providing insulation for organisms below. ... If water were most dense as a solid, lakes would freeze from the bottom up, eventually freezing solid.
Fossils show evidence of descent with modification
Answer:
D) anatomical features
Explanation:
The molecular systematics uses the data on the molecular structures to establish evolutionary relationships between the organisms. Techniques of DNA, RNA, and amino acid sequencing are used to compare the macromolecules of organisms. These studies provide information about the degree of relatedness among organisms. The closely related species share a higher degree of similarities in the sequences of these macromolecules. However, this branch of science does not include information about the anatomical and structural features to establish evolutionary relationships.
Answer:
Irregular heartbeat. Heart Failure. Fatal. The body does not get "oxygen-rich" blood. May feel tired or weak. Shortness of breath, dizziness, headaches. Blood loss, lack of red blood cell production, and high rates of red blood cell destruction
Explanation:
When you're anemic your heart pumps more blood to make up for the lack of oxygen in the blood. This can lead to an enlarged heart or heart failure.
Answer:
Polar molecules occur when there is an electronegativity (a charge) difference between the bonded atoms. Nonpolar molecules offur when electrons are shapred between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out.
Explanation:
Or basically, polar molecules occur with a charge, as nonpolar molecules do not. And yes, lipids are molecules.
