Using a microscope
Explanation:
A microscope is a scientific device used for magnifying and studying very tiny features.
It was invented by Anton Von Leeuwenhoek in the 17th century.
- A unicellular organism is an organism made up of a single cell.
- A multi-cellular organism is made up of several cells.
- A cell is a very small microscopic structure.
- It is usually described as the fundamental unit of life.
- Due to its small size, the naked eyes cannot see it
- The invention of the microscope opened up the world of cells.
- Since they have been around for a long time, distinction of cells would have been made possible at those times using a microscope.
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Answer:
The answer is D
Explanation:
Energy flows from the producers grass and plants, to the prey small animals, then to the predators.
The only correct answer in this case is B - a stroke.
None of the other answers could be counted as correct here.
While A - a heart attack is conceptualy similar, when we're talking about a heart attack, we're talking about not enough oxygen that gets delivered to the heart - because something is blocking it.
C - hypertension on the other hand means someone has a higher blood pressure than is usual for a regular human being, which puts more strain on his cardiovascualr system.
and D - atherosclerosis doesn't come even close to be correct :)
<span>The </span><span>cladogram of animals is based on scientists current
understanding of the evolutionary history of living species. </span>I
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Answer:
A
Explanation:
A because, A calorie is a unit that is used to measure energy. The Calorie you see on a food package is actually a kilocalorie, or 1,000 calories. A Calorie (kcal) is the amount of energy needed to raise the temperature of 1 kilogram of water 1 degree Celsius.
