Answer:
(1) Most of the species that have lived on Earth no longer exist.
Explanation:
Fossil describes the remnant or trace of animals or plants in a geologic age that is preserved in the Earth's crust. It can be studied to give a fossil record, which is an evidence of past existence of a plant or an animal.
Fossil record is the history of life of an organisms documented by fossil that has been preserved in rocks. It helps paleontologists, archaeologists, and geologists to make accurate predictions about events and species.
Scientists believe that almost 99.9% of species of different organisms that have lived on Earth are now extinct. Therefore according to fossil record, most of the species that have lived on Earth no longer exist.
A.) changes in chemical energy converts carbohydrates into smaller molecules
B.) changes in light energy convert chemical energy stored in carbohydrates
C.) changes that convert chemical energy into heat and light
D.) changes in nuclear energy converts hydrogen and oxygen into carbon
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the answer would be C. None of the other answers choices have anything to do with photosynthesis
Answer:
B. 23
Explanation:
The answer is B. 23
Although pterosaurs are reptiles, they are not marine reptiles. The answer is pterosaurs.
Answer: The correct answers are as follows:
1. During cytokinesis, THE CELL MEMBRANE PINCHES IN TO FORM TWO NEW CELLS.
Cytokinesis is the physical process of cell division, it divides the cytoplasmic content of the parental cell into two new daughter cells. Cytokinesis takes place in both mitosis and meosis.
2. The correct order of the phases of mitosis are as follows: PROPHASE, METAPHASE, ANAPHASE AND TELOPHASE.
Mitosis is the process of cell division by which a cell is divided into two new cells. The process occurs in four basic stages and result in the formation of two new cells.
3. The following terms are related to sexual reproduction: MATING SYSTEM, GAMETE FORMATION AND AMPLEXUS.
Amplexus refers to the mating positions of frogs and toads during sexual reproduction. Mating system refers to the number of mating partners that an animal has during the mating period. Gamete formation is the process by which sex cells are made and it occurs in both male and female animals.
4. As a cell is preparing to divide by mitosis, the DNA MUST BE COPIED.
When a cell is getting ready to divide by mitosis, it will undergo a stage called interphase, during which the cell prepare for cell division. During interphase, the cell undergo some process and these include the copying of the DNA. The cell copies its DNA so that it has two copies of each strand.
Explanation:
?
B. using solar cells
C. using windmills
D. using nuclear fission
Answer:
A. burning fossil fuels
Explanation:
Acid rain is caused, mainly by the emission of sulfur oxides and nitrogen oxides, which are gases commonly released into the atmosphere as a result of burning fossil fuels.
These oxides have the ability to interact with rainwater generating an acidic substance that is expelled from the clouds in the form of rain that has a very acidic pH.
The result of acid rain is the destruction of vegetables, the chemical alteration of water bodies, the death of aquatic animals, the contamination of groundwater and even the emergence of respiratory diseases and the destruction of public heritage.