Answer:
The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms.
expermant laveas test strach
Answer:
Experimental Procedure:
Mix 10 drops of tincture of iodine with 30 drops of water to make an iodine solution. Put a cracker on a plate, and test it for starch using a drop of the iodine solution. Chew a second cracker for 60 seconds until it is completely mixed with saliva.
A cement factory emits 900 kilograms of CO2 to produce 1,000 kilograms of cement. A fully grown tree removes six kilograms of CO2 per day from the air. One acre of land can support 200 mature trees.
A company builds a factory that will produce 100,000 kilograms of cement. To make the factory carbon neutral, the owners need to grow
trees over an area of land measuring
acres.
Answer: To make the factory carbon neutral, the owners need to grow 15000 trees over an area of land measuring 75 acres
Explanation:
From the information;
900 kg CO2 = 1000 kg Cement
1 tree = 6 kg CO2
1 acre = 200 trees
100000 kg Cement will require;
=(900 × 100000)/1000
= 90,000 kg of CO2
But 1 tree = 6 kg of CO2
Number of trees = 90,000/6
= 15,000 trees
But, 1 acre = 200 trees
Number of acres = 15,000/200
= 75 acres of land
Therefore;
To make the factory carbon neutral, the owners need to grow 15000 trees over an area of land measuring 75 acres
Answer: a and d
Explanation:
Natural killer (NK) cells ________. A) are also called cytotoxic T cells B) are a type of phagocyte C) are cells of the adaptive immune system D) can kill cancer cells before the immune system is activated
Natural killer (NK) cells are also called cytotoxic T cells (Option A).
What are NK cells?The NK (Natural killer) cells are cytotoxic lymphocytes that trigger responses from the innate immune system.
Natural killer cells are one of the most important types of lymphocytes (white blood cells) in human cells.
These cells have cytotoxic properties because they produce cytotoxic granules and different cytokines.
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You created a formula in cell c8. When you copy the formula into cell d8, which action are you taking?.
We are changing the content in the formula to the content in cell D8.
What cells is the question referring to?The question refers to the cells that we find in computer data processing programs that include a spreadsheet as the main tool.
In these programs we can edit each cell with different information and include formulas so that the cell data depends on others.
According to the situation presented, the first action we performed was to establish a formula in cell C8 to obtain the result of an operation in that cell. Later, we change it to cell D8, then we will see the result of that same operation in cell D8.
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A length of DNA that codes for a particular characteristic is called a
A:allele
B:gene
C:cell
D:Dna
Where are extrusive igneous rocks typically found? in a canyon in a riverbed near a dormant volcano deep under Earth’s surface
Answer:
near a dormant volcano deep under earths surface
Explanation:
how did scientists change societies view of smoking after 1960?
Answer:
Obviously they showed that smoking can cause cancer
Explanation:
lol
Answer:
They changed society's view of smoking after 1960 by showing that smoking causes cancer. Answer: B. They showed that smoking causes cancer. There was a noted change in the society's view on smoking after 1960. Such change was influenced by declaring tobacco as an addiction and that it can cause cancer. It started in the 1964.
3. How is heat transferred within the Earth?
(5 Points)
O A. by conduction
O B. by radiation
O C. By seismic waves
O d. by gravity
the answer is D
"During convection, heat is being transferred between substances in direct contact with each other by electro magnetic waves."
"Using the molten rock to explain the convection in the earth relative to how if affects the weather condition. Here, the rock is in a molten state, rising up from the bottom of the mantle after becoming hotter and less dense from the heat of the earth's core. As the rock loses heat into the earth's crust, it become cooler and more dense,sinking back to the core. These constantly circulating cells of hotter and cooler molten rock help to heat the earth's surface."
Which of these does NOT greatly affect climate?
A. Earth's Tilt
B. Angle of Sunlight
C. Seasonal Changes
D. Location on Earth
Answer:
D...
Explanation:
Can someone make me a storyline about protist? It doesn’t have to be a whole story but something I can go off of?
Answer:
Protists are a diverse collection of organisms that do not fit into animal, plant, bacteria or fungi groups. While exceptions exist, they are primarily microscopic and made up of a single cell (unicellular), according to the educational website CK-12.
What is the Cell Theory , and what is it about ?
Answer:
Basic unit of life is cells
Answer:
The Cell Theory Is a Biology Unifying Principle
Explanation:
According to the cell theory, all biological entities are made up of cells; cells are the basic unit of life, and all life originates from pre-existing life. The cell theory is now so well-established that it serves as one of biology's unifying principles.
A growth chart is used in monitoring the growth and development of a child. the star on the chart represents a girl who is at the doctor for a routine check-up. judging by the location of the star, should the doctor conduct tests to examine her pituitary gland?
No, her height is within normal range, and her pituitary gland is working normally.
Why is the pituitary gland called the master gland?The pituitary gland is occasionally called the "master" gland of the endocrine system because it maintains the functions of many of the other endocrine glands.
The pituitary gland is no larger than a pea and is found at the base of the brain.
Thus, her height is within normal range, and her pituitary gland is working normally.
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Record the elements present in each unknown astronomical object. Be sure to indicate “yes” or “no” for each element.
Hydrogen Helium Lithium Sodium Carbon Nitrogen
Moon One
Moon Two
Planet One
Planet Two
We record the elements present in each unknown astronomical object according to metallicity.
Moon one - HeliumMoon two - SodiumPlanet one - Hydrogen -Carbon Planet two - Lithium - Nitrogen
To understand these answers, we need to know what metallicity.
What is metallicity?In astronomy and physical cosmology, metallicity (also called Z) of an object is the proportion of its matter made up of chemical elements other than hydrogen and helium. Because stars, which make up most of the visible matter in the universe, are composed primarily of hydrogen and helium, astronomers conveniently use the generic term "metal" to describe all other elements collectively.
With this information, we can conclude that we have recorded the elements present in each unknown astronomical object according to metallicity.
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Answer:
Moon 1- is lithium and carbon.
Moon 2- is sodium and nitrogen.
Planet 1- is hydrogen and carbon
Planet 2- is helium and carbon
(type no for each box that isn’t listed above.)
Explanation:
I did the slide show.
how ribosomes help cell maintain homeostasis
Answer:
Ribosomes create the thermoreceptors of the body. Another example of a homeostatic condition maintained by proteins is blood-glucose levels. When our blood-sugar levels get too high, specialized cells in the body release a protein hormone called insulin.
Explanation:
Hope This Helps
Have A Great Day
~Zero~
Answer: Ribosomes play a key role in homeostasis. Without ribosomes, a cell would not make proteins. A cell with no ribosome would simply not function. With no protein reproduction to maintain the cell wall there would be no barrier to keep invasive bodies from damaging the inner workings of the cell, there would be no way to produce the needed proteins for rebuilding and maintaining the cell.
Hope this helps!
Do you think your classroom population is a typical representation of a larger population such as your entire school
My class can not be a representation of the larger school because my class consists of people of the same age bracket and the same level of study.
What is a representative population?A representative population is a population that reflects the whole. A sample must be taken in such a way that it can effectively reflect the components of the whole.
My class can not be a representation of the larger school because my class consists of people of the same age bracket and the same level of study. The school is composed of different classes occupid by students of different age groups and different levels of study.
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While walking a cornfield, you notice roots emerging from the corn stalks themselves, and you suspect that these roots are helping to hold the plants upright. these roots belong to a category of roots known as ________.
a) taproots.
b) fibrous roots.
c) adventitious roots.
d) root hairs.
e) special roots.
Since fibrous roots grow from the side of monocot plants, the plant roots observed on the corn stalk are fibrous roots.
What are fibrous roots?Fibrous roots are roots of plants which are usually seen on the surafce above ground and which grow from the side of plants.
Monocotyledons such as corn have fibrous roots.
The fibrous roots help to provide support and strength to the plant.
Therefore, the plant roots observed on the corn stalk are fibrous roots.
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20. Which of the following statements identifies the relationship between the Miller-Urey Experiment and the
Primordial Soup Hypothesis?
Miller-Urey supported the Primordial Soup Hypothesis because it concluded that organic molecules could be
produced in the presence of certain inorganic conditions of early Earth.
Miller-Urey disproved the Primordial Soup Hypothesis because it concluded that amino acids could be
produced in the presence of certain inorganic conditions of early Earth.
Miller-Urey did not support the Primordial Soup Hypothesis because it did not prove the formation of organic
molecules through a lightning strike hypothesis.
No relationship exists between the two.
Miller-Urey supported the Primordial Soup Hypothesis because it concluded that organic molecules could be
produced in the presence of certain inorganic best explain the relationship between Miller-Urey and Primordial soup.
Miller urey experiment.The Miller Urey experiment refer to a form of chemical experiment that simulated the conditions present on the early Earth and tested the chemical origin of life using those conditions . The experiment performed at the time supported Alexander Oparin's and J. B. S. Haldane's hypothesis that putative conditions on the primitive Earth is important for chemical reactions to produce more complex organic compounds from simpler inorganic precursors.
The first was the “primordial soup” which was a conclusion that when Earth was young, the oceans were filled with simple chemicals important for life and this assemble into living cells.
Therefore, Miller-Urey supported the Primordial Soup Hypothesis because it concluded that organic molecules could be
produced in the presence of certain inorganic best explain the relationship between Miller-Urey and Primordial soup.
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To what level of organization does a paramecium belong to?
The level of organization that a paramecium belongs to is : Unicellular protozoa
What are paramecium?Paramecium are unicellular protozoa that belongs to the kingdom Protista. they are unicellular because they are comprised of a single cell organization. Paramecium are found in aquatic habitats such as freshwater and brackish waters.
Hence we can conclude that The level of organization that a paramecium belongs to is Unicellular.
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#SPJ4
what bone was in the spinal cord
Answer:
Vertebrae are the 33 individual bones that interlock with each other to form the spinal column.
Explanation:
The vertebrae are numbered and divided into regions: cervical, thoracic, lumbar, sacrum, and coccyx (Fig. 2). Only the top 24 bones are moveable; the vertebrae of the sacrum and coccyx are fused.
based on the Cytochrome C data, which organism is most closely related to human
Based on evolutionary relationship, the most closely related organisms will have the most similarity in Cytochrome C structure.
What is cytochrome C?Cytochrome C is a mitochondrial protein molecule which functions as an electron carrier in the electron transport chain.
Closely related organisms have similarity in genes as well as in protein structure.
The most closely related organisms will have the most similarities in genes and proteins structure.
Therefore, the most closely related organisms will have the most similarity in Cytochrome C.
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Which statement BEST describes what happens during the S-phase of the cell cycle?
A.Protein synthesis needed for spindle formation and mitosis.
B.DNA replication where the amount of genetic material is doubled.
C.The cell partitions the two copies of genetic material into the two daughter cells.
D.Cell division occurs and two cells are left; thus the cell cycle begins again.
Answer:
B
Explanation:
The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells.
What gas to trees and other plants REMOVE from the atmosphere, which helps decrease global warming?
I need the answers asap I will mark it
Answer:
Carbon Dioxide or CO2 is removed from atomsphere by trees and other plants through photosynthesis.
In the film, Paine recalls that a year after the starfish had been removed, the number of species decreased from 15 to eight, after three years the number went down to seven, and after another seven years it was almost all only mussels. In the control plots, the number and diversity of species were basically unchanged. Which statement(s) best explain(s) these results?
a. Keystone species are critical to the diversity and stability of an ecosystem.
b.When a predator is removed, the prey of that predator always increases, and species not eaten by the predator always decrease.
c. The disappearance of producers from an ecosystem can cause the number of predators to increase
Answer:
please can you short the question , because I don't understand it
Pls help i will give 5 starts and brainliest question is down below 9:46
cool, very thin, outermost layer, under the ocean, usually made of out basalt: 1. oceanic crust
cool, very thin, outermost layer of the earth includes continents and ocean floor: 4. crust
the layer beneath the earth's crust. solid, hot rock that flows slowly: 5. mantle
earth layers organized by what the layers are made of : 1. compositional layers
cool very thin, outer most layer, on continents usually made of granite: 3. continental crust
(hope i could helppp :D )
How would a harsh winter most likely affect the rabbit population size?
a. population decreases
b. population increases
c. population reaches carrying capacity
d. population completely dies off
Answer:
a
Explanation:
Because a harsh winter will cause food and weather to decrease and almost kill off the rabbits but some will still survive.
help please!!!! it’s called DNA and genetics !!!!!
Answer:
9 is mutations
Explanation:
Sucrose is the assistant of the genius alchemist called.
Answer:
The Answer of your question is Albedo
How does emissions of carbon dioxide impact climate change?
Answer:
The carbon emissions trap solar energy in the atmosphere which causes global temperatures to increase, this is also called the greenhouse effect. Since the global temperatures will increase, ice in the polar regions will melt causing the water level to increase leading to an influx of problems.
Explanation:
What is the general term for viruses and bacteria that make us sick?.
Pollinating bees that visit flowers while harvesting nectar and pollen are considered examples of _____.
Answer:
Mutualism
Explanation: