Answer: Cynobacteria
Explanation:
The Precambrian time is the earliest period of earth history. It is preceded by the Cambrian time hence got the name. The earliest living organism in the Precambrian time was the Cynobacteria. It has been found in the fossil record of 3.4 billion years ago. They were the primitive organisms which were capable of conducting photosynthesis and producing oxygen. The abundance of Cynobacteria has resulted in the increase in abundance of oxygen into the atmosphere.
B. biomass
C. trophic
D. organic
Living material that makes up organisms is known as biomass. The correct option is B.
Biomass is the word used for the energy that is produced by biological matter, plants and animals, and other organisms. The energy produced by the households matters.
The biomass on burning releases carbon dioxide, so it is not good energy for the environment.
Thus, option B. biomass is correct.
Learn more about biomass, here:
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Answer:
the answer is B. biomass
Answer:
Explanation:
Laboratory is a place where ideas and concepts can be tested through experiments. Biology, like any other discipline of science, is based on experimental work and therefore practical forms an integral part of learning.
Magnification by a microscope is a multiple of the X value of the lenses of the eye piece and objective. For example, a 5X eye piece and a 40X objective will magnify the image 5 × 40 = 200 times the size of the object. Similarly, when a 10X eye piece and a 40X objective are used, magnifying power would be 10 × 40 = 400X. Generally, in a compound microscope, the eye piece lenses are 10X or 15X and the objective lenses are 10X as well as 40X.
Answer: Usually carry deoxygenated blood.
I got this one right on my test o(^U^)o
Explanation:
Answer:
Carry blood to the heart
Explanation:
b. mitochondria
c. central vacuole
There are three main differences in things that plant cells have but animal cells don't
A plant cell has:
A cell wall
Chloroplasts
A large central vacuole.
The Answer is C
B. vestibule
C. on-the-job
D. performance
they are employing B. vestibule training
ОТ
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