Answer:
The cell theory developed most quickly due to the invention of the microscope. Robert Hooke was the first scientist who saw cells in cork. After this discovery, a wide numbered of researches were made and cell theory was developed. The basic cell theory explained that how every living thing was made up of cells. After this, a lot of additions have been made in the cell theory and today the cell theory is known to have five basic postulates.
Answer:
The power to lay and collect taxes
The Reagan administration tried to reduce the role played by the federal government in state and local matters
Resident/nonresidents
A republican form of government for every state
Extradition
State laws and court decisions must generally be honored by other states
Exercised simultaneously by the national and state governments
<span><span>Photoreceptors
are cells</span><span><span> <span>in
the retina</span></span><span> that
begin the process of seeing. The retina is the back part of the eye that
contains the cells that respond to light. These specialized cells are called photoreceptors. They
absorb and convert light into electrical signals. These signals are sent to
other cells in the retina and ultimately through the optic nerve</span></span><span> <span>to
the brain</span></span><span> where
they are processed into the images we see. The answer is true. Animals
with photoreceptors have good vision.</span></span>
Answer:
<em>The correct option is A) an increase in oxygen levels, which led to the extinction of many anaerobic organisms.</em>
Explanation:
Photosynthesis can be described as a process in which food (glucose) is produced by photosynthetic organisms by using carbon dioxide, water along with light energy from the sun. Oxygen is released as a by-product of this reaction. The process of photosynthesis initially allowed for oxygen gas to get accumulated in the air. This caused the rise of aerobic organisms who required oxygen for respiration. Before the photosynthesis organisms evolved, there was not enough oxygen gas on earth to support the life of aerobic organisms.
Answer:
c
Explanation:
always were either one color or the other
