Answer:
The CELL THEORY, or cell doctrine, states that all organisms are composed of similar units of organization, called cells. The concept was formally articulated in 1839 by Schleiden & Schwann and has remained as the foundation of modern biology. The idea predates other great paradigms of biology including Darwin's theory of evolution (1859), Mendel's laws of inheritance (1865), and the establishment of comparative biochemistry (1940).
Ultrastructural research and modern molecular biology have added many tenets to the cell theory, but it remains as the preeminent theory of biology. The Cell Theory is to Biology as Atomic Theory is to Physics.
TRUE.THEY DO NOT COTAIN THOSE THINGS.
Answer:
D. Mountains
Explanation:
Sinkholes are caused by cave ins, valleys are in between mountains, and buttes are most likely caused by erosion after the sand and soil got blown away. Mountains are caused by two plates slamming into each other and going sky-wise.
Answer:
Sexual selection
Explanation:
Sexual selection is a specific type of natural selection process by which an organism is able to choose and compete to find a mate, by enhancing the adaptive changes between both the organism (male and female). This process of selection allows some specific members of the population to generate more in number in comparison to the others. This process leads to the increased fitness of the female body by making them over-fastidious.
Answer:
Epithelial cells also line the inside of your throat, intestines, blood vessels, and all your organs. They are a barrier between the inside and outside of your body and are often the first place that is attacked by viruses as they begin their invasion deeper into the body.
Explanation:
Epithelial tissue covers the outside of the body and lines organs, vessels (blood and lymph), and cavities. Epithelial cells form the thin layer of cells known as the endothelium, which is contiguous with the inner tissue lining of organs such as the brain, lungs, skin, and heart.