Answer:
Mammals are a group of vertebrate animals constituting the class Mammalia and characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or hair, and three middle ear bones. These characteristics distinguish them from reptiles and birds, from which they diverged in the Carboniferous, over 300 million years ago.
aardvarks.
bats.
elephants.
hamsters.
humans.
rabbits.
rhinoceroses.
whales.
Explanation:
Fossils
Explanation:
Fossils are words used to describe the history of life in the geological past as indicated by the imprints or remains of living things.
Fossils are the preserved remains of dead and decayed organisms that have once lived. Their activities are also classified as fossils.
- Fossils generally tell us the history of life and the sequence of evolution of living organism.
- They presented a valuable source of information with regards with the nature of paleo-climatic conditions and the environment in times past.
- Fossils ranges from whole preservation of an organism to preserved hard parts.
- Some fossils are just traces and prints of the life activities of organisms.
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The spine is the indicator of stature
Its necessary for <span>electrostatic attraction hope this helps</span>
Answer;
D.Carbon-based macromolecules are found in all life forms.
Explanation;
-Most molecules that make up living things are based on carbon atoms. The structure of a carbon atom allows it to form up to four covalent bonds. It can bond to other carbons or to different atoms.
-All organisms are made of four types of carbon-based molecules; carbohydrates, lipids, proteins, and nucleic acids. Carbohydrates are molecules made of carbon, hydrogen, and oxygen. Sugars and starches are both types of carbohydrates. These carbohydrates can be broken down to produce energy in cells. Some carbohydrates are part of cell structure in plants.
-Lipids are molecules that include fats, oils, and cholesterol. Lipids are nonpolar, so they do not dissolve in water. Like carbohydrates, most lipids are made of carbon, oxygen, and hydrogen atoms. Some lipids are broken down and used as energy in cells.
-Proteins are the most varied of the carbon-based molecules in organisms. There are many different types of proteins. They are involved in many different body functions including movement, eyesight, and digestion.
