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Questions (480)
A projectile is launched horizontally from the edge of a cliff 20 meters high with an initial speed of 10 m/s.what is the
1 answer
104 views
Ebo throws a ball in to the air.it's velocity at the start is 18m/s at an angle 37° to the ground. Calculate
A,the range and
3 answers
157 views
Chromosomes from a mother and a father combine during fertilization. What does the offspring of two parents inherit through
1 answer
207 views
Chromosomes from a mother and a father combine during fertilization. What does the offspring of two parents inherit through
1 answer
114 views
Look at the diagrams.They show steps in the sequence of replication. The steps of this sequence happen in what order? (1 point)
4
1 answer
151 views
Certain cells are activated by the immune system to find and destroy pathogenic cells that make their way into the body. T cells
1 answer
154 views
The diagram shows a microscopic view of the lower epidermis of a maple leaf. What type of cell is indicated by label B? (1
1 answer
203 views
A student is asked to demonstrate the motion indicated by the data in
the graph shown below. If the student demonstrates the
1 answer
231 views
A hypothesis stated that an asteroid striking Earth brought about the extinction of the dinosaurs.
Which of the following would
3 answers
183 views
Which statement best describes scientific theories?
(1 point) Scientific theories are based on facts that describe natural
1 answer
353 views
Ethan is observing chemical and physical properties of a substance. He heats a
substance and observes that the substance turns
0 answers
193 views
The human immune system is made up of special cells, proteins, tissues, and organs that defend against viruses and
0 answers
129 views
Glands regulate distant parts of the human body with hormones. The pancreas regulates the body with a hormone called insulin. A
1 answer
189 views
The diagram below describes the relative positions of the Sun, Earth, and the Moon.
When the Sun, Earth, and the Moon are in
1 answer
158 views
The purpose of both mitosis and meiosis is to create new cells. Both processes involve the replication of genetic material
1 answer
164 views
The purpose of both mitosis and meiosis is to create new cells. Both processes involve the replication of genetic material
0 answers
143 views
Cellular respiration is the process that allows living organisms to extract energy from nutrients. What is the main difference
1 answer
160 views
Radiation is energy that comes from a source and travels through space at the speed of light. This energy has an electric field
1 answer
136 views
A robotic submarine explores the ocean near some deep-sea vents. It collects samples of living things, such as tube worms. Where
1 answer
125 views
The leaf cells of green plants usually contain chloroplasts. The root cells of green plants do not usually contain these
1 answer
149 views
On a summer day, Thomas is standing in his driveway waiting for his mother. Energy from the Sun is making
Thomas feel hot. This
1 answer
228 views
The interaction between the cryosphere and hydrosphere can have an impact on Earth’s oceans. Which ofthe following is an
1 answer
110 views
Which of the following situations demonstrates a physical change? SC.8.P.9.2 (1 point)
milk going sour melting of ice rusting
1 answer
116 views
The diagram shows parts of the human brain. Some areas of the brain contain several smaller parts. Look at the part of the brain
1 answer
177 views
Agustin visits Panama City, Florida, during the month of May. He feels a shore breeze blowing from the
ocean onto the beach. What
1 answer
128 views
Different types of cells can have certain organelles and structures in common. Which types of cells definitely contain cell
1 answer
227 views
Scientists have found many marine fossils on mountains far from any ocean or sea. What is the best explanation for these
1 answer
146 views
Kimberly draws the food web shown. A reduction in the population of which organism would reduce the food sources available to
1 answer
141 views
During exercise, energy demand in the muscles increases. Which other body system directly provides for this demand? (1 point)
int
1 answer
86 views
During exercise, energy demand in the muscles increases. Which other body system directly provides for this demand?
1 answer
121 views
Part of the electromagnetic spectrum is visible light. Which color is at the opposite end from red on the visible spectrum?
SC.7.
1 answer
145 views
Members of which kingdoms are capable of conducting photosynthesis?
1 answer
79 views
The male gametes of the human reproductive system are called sperm cells. Where are sperm cells stored after they are produced?
1 answer
156 views
The male gametes of the human reproductive system are called sperm cells. Where are sperm cells stored after they are produced?
1 answer
159 views
The diagram identifies the Trachea, Right Lung, Left Lung
Which level of organization describes each of these structures? a.Organ
1 answer
142 views
osé performs an experiment to determine how much sugar can be dissolved in 250 milliliters (mL) of water at 25°C. He adds 50
1 answer
189 views
he process by which cells replicate is very different than the process by which gametes are produced. Which of the following do
1 answer
132 views
he process by which cells replicate is very different than the process by which gametes are produced. Which of the following do
1 answer
135 views
Amino acids have similar structures. What part of an amino acid’s molecular formula distinguishes the macromolecule from other
1 answer
169 views
Alec adds some soil and plants to a large glass jar.
He waters the plants and then adds worms, and snails to the jar. Then places
1 answer
388 views
All of the devices below either use or produce electrical energy. Which one converts mechanical energy to electrical energy?
SC.7
1 answer
143 views
All of the devices below either use or produce electrical energy. Which one converts mechanical energy to electrical energy?
1 answer
147 views
An object moves through space with balanced forces acting on it. Which statement best describes the speed and direction of the
1 answer
230 views
Which statement best describes the rocks at the locations labeled in
the diagram? Rocks at locations 1 and 3 are the same age.
1 answer
166 views
Which statement best describes the rocks at the locations labeled in
the diagram?
1 answer
163 views
Scientific knowledge is always changing. Which of the
following resulted in an important change in scientific knowledge? (1
1 answer
238 views
Stars can be many different colors. Which star in the chart has the highest surface temperature?
SC.8.E.5.5 (1 point)
1 answer
108 views
In a breed of dog, the gene for black fur is dominant and the gene for brown fur is recessive. Two dogs with black fur are bred.
0 answers
167 views
In a breed of dog, the gene for black fur is dominant and the gene for brown fur is recessive. Two dogs with black fur are bred.
1 answer
139 views
According to cell theory, where do plant cells come from?
A) organelles B) other plant cells C) protein synthesis D) chemical
1 answer
119 views
according to there'll theory, where do cell plants come from
1 answer
84 views
The human immune system is made up of special cells, proteins, tissues, and organs that defend against viruses and
1 answer
182 views
Which of the following would be the least likely cause of a volcanic eruption?
gas pressure within Earth’s crust new magma
1 answer
154 views
Which of the following would be the least likely cause of a volcanic eruption?
1 answer
110 views
Chaya analyzes the data for two stars. Both stars are the same color, but the first star has an absolute brightness greater than
1 answer
198 views
Chaya analyzes the data for two stars. Both stars are the same color, but the first star has an absolute brightness greater than
1 answer
154 views
A beaker of hot water is carefully placed on a cold tabletop. What will
happen after the beaker is placed on the tabletop? A
1 answer
163 views
A beaker of hot water is carefully placed on a cold tabletop. What will
happen after the beaker is placed on the tabletop?
1 answer
128 views
Based on this diagram, which statement can be concluded?
a. A day on Earth is longer than a day on Mercury. b. A year on Venus is
1 answer
131 views
Fungi used to be classified in the same kingdom as plants. In time, scientists observed a key characteristic that required
1 answer
172 views
Fungi reproduce sexually and asexually.
Fungi are eukaryotic. Fungi are heterotrophic. Fungi are multicellular.
0 answers
193 views
Fungi used to be classified in the same kingdom as plants. In time, scientists observed a key characteristic that required
0 answers
223 views
Scientists from different fields work together to continually modify the chemical composition of antibiotic medicines. This is
1 answer
121 views
Scientists from different fields work together to continually modify the chemical composition of antibiotic medicines. This is
1 answer
123 views
Yeast is a single celled organism that uses sugar in the process of cellular respiration. Javier prepared a warm sugar water
1 answer
233 views
During science class, Mauricio made sketches of the major organelles of the cell. Which of the following is his sketch of a
1 answer
124 views
Urbanization refers to the population shift from rural to urban areas, the corresponding decrease in the proportion of people
1 answer
169 views
The scientific community communicates its findings to the rest of the world by publishing its work in scientific journals. This
1 answer
159 views
In time, scientists observed a key characteristic that required reclassification. What was that characteristic of the fungi?
1 answer
152 views
In time, scientists observed a key characteristic that required reclassification. What was that characteristic?
1 answer
134 views
Fungi used to be classified in the same kingdom as plants. In time, scientists observed a key characteristic that required
1 answer
142 views
Kimberly draws the food web shown. A reduction in the population of which organism would reduce the food sources available to
1 answer
116 views
The diagram shows a microscopic view of the lower epidermis of a maple leaf. What type of cell is indicated by label B? (
1 answer
130 views
If the inflation rate in New Zealand were to rise relative to the inflation rate in Russia, which of the following correctly
1 answer
263 views
28×78
1 answer
81 views
Was a billionaire man's hair cut in acctive
1 answer
140 views
I cut hairs a man billionaire in passive
1 answer
160 views
Who wants me in passive
1 answer
103 views
She kills me in passive
1 answer
102 views
I kills her
1 answer
97 views
Iam student
1 answer
164 views
Who wants me change passive
1 answer
95 views
I cut hair billionaire Chang to passive
1 answer
136 views
A car of mass 600kg in moving aspeed of 20m/s it collides with a stationary frist car does the second car move after the
1 answer
196 views
A child of mass 40kg jumps of a wall and hits the ground at 4m/s he bends his knees and stops in 1 second calculate the force
1 answer
175 views
Two forces are acting on air craft of mass 200g as shown fig
6000N north 2000N east
1 answer
114 views
A bullet of mass 0.01kg is fired in to sand bag of mass 0.49kg longing from a tree the sand bag with the bullet at 10m/s find
1 answer
207 views
A bullet of mass 0.01kg is fired in to sand bag of mass 0.49kg longing from a tree the sand bag with the bullet at 10m/s find
1 answer
184 views
A bullet of mass 0.01kg is fired in to sand bag of mass 0.49kg longing from a tree the sand bag with the bullet at 10m/s find
1 answer
176 views
What is the physics
1 answer
90 views
State the law of conservation of linear motion
2 answers
124 views
The James, Roanoke, Savannah River begin in a geographic feature called the headlands. What is this feature?
1 answer
151 views
Explain exactly how you would perform the following laboratory instructions; thatis
write a short procedure. "Wash the organic
1 answer
159 views
a ball is dropped form heigth of 80 feet and its elasticity of a ball is such that it rebounced 2/5 of the diatance.ti has
1 answer
120 views
Calculate the number of moles of 6gm of sulphur and sodium and
1 answer
156 views
Two salesman Emaan Nad Masood are paid total total of rs 550 per wave by the employer if the imman is paid 120% of the sum paid
1 answer
150 views
How to get 1m on youtube 😂
2 answers
207 views
Why was olympia selected to hold at ancient Olympic games?
1 answer
267 views
As in an earlier exercise, busy people arrive at the park according to a Poisson process with rate /hour. Relaxed people arrive
1 answer
1,520 views
Explain why the freezing point of a pure solvent remains constant whereas
the freezing point of a solution continues to decrease
1 answer
297 views
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