Answer:
b
Explanation:
Answer:9.b
10.d
11.b
12.b
Explanation:
How are extrusive rocks formed?
Answer:
the rocks that form at erupting volcanoes and oozing fissures.
Explanation:
Some geographers study human geographic characteristics in addition to physical geographic characteristics. Summarize three examples of human geographic characteristics that might be recorded by a geographer studying Africa.
Answer:It should be like the African people's culture/ things they put there. It is their interaction with their environment. Buildings, pottery, or traditional ceremonies.
Explanation:
Images A and B below represent two different slide preparations of elodea leaves.
Elodea is a plant found in streams and ponds that normally contains 1% salt and 99% water.
Model A: Elodea leaf mounted in solution of 1% salt and 99% water
Model B: Elodea Leaf mounted in a Solution of 6% salt and 94% water.
Five minutes after the slides were prepared, a student using a compound light microscope to observe the cells in leaves A and B would most likely see which of the following?
A. Water moved into the cells of the leaf on slide A, causing the cells to swell.
B. Water moved out of the cells of the leaf on slide A, causing the cells to shrink.
C. Water moved out of the cells of the leaf on slide B, causing the cells to shrink.
D. Water moved into the cells of the leaf on slide B, causing the cells to swell.
which choice has eukaryotic animal cells?
lactobacillus
virus
liver
oak
Physical characteristics of sedimentary, metamorphic, and indigenous rocks?
Need help ASAP please!
In one paragraph, please justify the following argument: “Without the sun, I would be unable to move.” Discuss the processes of both photosynthesis and cellular respiration in your response, including the reactants and products of each.
It is true, without the sun we wouldn't be able to move because we need vitamin D and whatever. The sun is a very important thing, it makes people happy and warm. It also makes food for us. Without the sun, we'd all be dead. It's as simple as that. Sry if this is the totally wrong answer, I haven't seen the whole argument I don't believe.
-0229
PLZZ HELP!
the organism in the image is a free-living one that is anchored to the bottom of ponds and streams
what is the common name of the group to which this organism belongs?
A. CNIDARAINS
B. FLATWORMS
C. ANNELIDS
D. PORIFERA
The common name of the group to which the organism belongs to cnidarians.
Who are cnidarians?Cnidaria is a phylum under kingdom Animalia containing over 11,000 species of aquatic animals found both in freshwater and marine environments, predominantly the latter. Their distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey.
Moreover, cnidarians have a unique feature: stinging cells called cnidocytes (NID-uh-sites). Each cnidocyte cell has a long, coiled, tubular harpoon-like structure.
Hence, the phylum Cnidaria is made up of four classes: Hydrozoa (hydrozoans); Scyphozoa (scyphozoans); Anthozoa (anthozoans); and Cubozoa (cubozoans).
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Warm ocean currents cause major weather events, impacting animals and their survival. Which two main spheres are involved?
Atmosphere and biosphere
Geosphere and biosphere
Hydrosphere and biosphere
Atmosphere and hydrosphere
Answer:
hydrosphere and biosphere
Explanation:
i am 96% sure i'm right
Please match the parts of the microscope with their function. Put the letter next to the part of the microscope that fits the description.
1. D
2. H
3. A
4. F
5. J
6. I
7. G
8. C
9. B
10. E
11. K
Correct match the parts of the microscope with their function -
1. Eyepiece - D 2. Base - H 3. Nosepiece - A 4. Stage - F 5. Coarse adjustment knob - J 6. DIaphragm - I 7. Stage clips - G 8. Fine adjustment knob - C 9. Objective lens - B 10. Arm - E 11. Light source - KParts of the microscope are:
Eyepiece or ocular - the part which is used to look through at the top of the microscope. Arm - it is used to carry a microscope. Objective lens - the primary optical lenses on a microscope ranging from 4x to 100x magnification power. Nosepiece - the part of a microscope to which the objective lenses are attached.Fine adjustment knob - A slow but precise control used to fine focus the image when viewing at the higher magnifications. Coarse adjustment knob - The coarse adjustment knob located on the arm of the microscope moves the stage up and down to bring the specimen into focus. Stage -This is a ledge where the specimen to be observed is placed. Stage clips - Clips on the stage that hold that is a glass slide on which the specimen has been mounted. Light source - This is the light source for a microscope usually located in the base of the microscope. diaphragm - This is a flexible structure that controls the amount of light reaching the specimen and is located above the condenser and below the stage. Base -This is the foot of the microscope and supports the whole frame of the microscope.Learn more:
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How did the lab activities help you answer the lesson question: How are relative and absolute dating methods used to determine the age of rocks and fossils? What did you learn from conducting this lab?
(NO SAMPLE ANSWERS!)
Answer:
Relative Dating with Fossils: Index Fossils as Indicators of Time
Explanation:
Answer:
thats cool
Explanation:
plzz hhheeeelllllpppp mee! Which great scientist laid the ground work for the scientific method we use today?
Question 2 options:
A)
Aristotle
B)
Galileo
C)
Newton
Answer: b
Explanation:
if thats wrong then its c, hope this helped
How does something become a limiting factor?
Which kind of soil do temperate climate areas usually have?
-Soil containing little to no organic material
-Soil rich in nutrients
-Soil with a layer mostly composed of clay
-Soil consisting primarily of tiny rock particles
Answer:
The second one will be your answer
Explanation:
The models below illustrate cells that have been placed in solutions containing salt. The cell membrane is permeable to water, but not permeable to salt. In which model would water leave the cell, causing the cell shrink?
Cell Model A: INside-3% salt 96% water OUTside-1% salt 99% water
Cell Model B: INside 3% salt 97% water OUTside 3% salt 97% water
Cell Model C: INside 1% salt 99% water OUTside 3% salt 97% water
Cell Model D: INside 99% salt 1% water OUTside 97% salt 3% water
A. Cell b.
B. Cell c.
C. Cell a.
D. Cell d.
When studying living organisms, why is it important to start with the cell first?
Answer:
To identity the type of cell.
Explanation:
Um I dunno
How is a branching tree diagram used? (20 points!!)
Answer: It is used to break down broad categories into finer and finer levels of detail. Developing the tree diagram helps you move your thinking step by step from generalities to specifics.
Explanation:
How long can you leave an Abyssinian cat alone?
before DNA was discovered, in which materials did scientists think the gentic material was stored? a. proteins b. carbohydrates, c. nucleic acids, d lipids
Explain what selective permeability is and how this relates to the cell membrane? pls help
Answer:
Well selectively permeable means that the membrane selects what goes in and out of the cell
Explanation:
Exposed to sunlight ---> Increased use of CO2 ---> ?
You are studying plants and your teacher has made a flowchart for a leaf. What phrase, if placed in box X, would correctly complete the flowchart above?
A. Increased amount of food production in the leaf because more carbon dioxide will increase the amount of photosynthesis occuring in the leaf.
B. Decreased amount of food production in the leaf because more carbon dioxide will increase the amount of photosynthesis occuring in the leaf.
C. Increased amount of food production in the leaf because more carbon dioxide will decrease the amount of photosynthesis occuring in the leaf
D. Decreased amount of food production in the leaf because more carbon dioxide will decrease the amount of photosynthesis occuring in the leaf.
When the plant is placed under the sunlight and the carbon dioxide, then an increased amount of food production occurs in the leaf because more carbon dioxide will increase the amount of photosynthesis occurring in the leaf, as is present in option A.
What is the role of photosynthesis?Photosynthesis is a process in which the plant needs carbon dioxide, sunlight, and water. When the plant is in normal condition and getting sufficient sunlight and carbon dioxide, the rate of photosynthesis increases, and the glucose synthesis increases too.
Hence, when the plant is placed under the sunlight and the carbon dioxide, an increased amount of food production occurs in the leaf because more carbon dioxide will increase the amount of photosynthesis occurring in the leaf, as is present in option A.
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Which of the following is NOT true of mutations?
a) They can take place in body cells or in reproductive cells.
b) They often lead to beneficial variations.
c) They can be caused by X rays.
d) They involve changes to genetic information.
While playing basketball, a student scrapes their knee. Which explanation best describes what organelles work together for the skin to heal after being cut?
A. The cell membrane controls the amount of energy released so that the lysosomes can give the command for cellular reproduction.
B. The mitochondria provides the energy for the cell membrane to control the process of cellular reproduction.
C. The chloroplasts provide nutrients for the nucleus to give instructions to the other organelles so that cellular reproduction can occur.
D. The nucleus gives instructions to begin cellular reproduction and duplicates the DNA, and the mitochondria makes the energy necessary for the process.
The explanation best describes organelles work together for the skin to heal after being cut is the nucleus gives instructions to begin cellular reproduction and duplicates the DNA, and the mitochondria makes the energy necessary for the process. Thus, option D is correct.
What is RNA and DNA?Ribonucleic acid (abbreviated RNA) is a nucleic acid present in all living cells that has structural similarities to DNA. Unlike DNA, however, RNA is most often single-stranded.
An RNA molecule has a backbone made of alternating phosphate groups and the sugar ribose, rather than the deoxyribose found in DNA.
Attached to each sugar is one of four bases: adenine (A), uracil (U), cytosine (C) or guanine (G). Friedrich miescher discovered DNA in the year of 1860.
In our body DNA is found in the nucleus of the cell and it is known as nuclear DNA. The shape of DNA is double helical structure.
Therefore, the explanation best describes organelles work together for the skin to heal after being cut is the nucleus gives instructions to begin cellular reproduction and duplicates the DNA, and the mitochondria makes the energy necessary for the process. Thus, option D is correct.
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What other ways can organisms be classified? (20 points!!)
Answer:
Here:
Explanation:
1. Physiological Structures: grouped organisms by their modes of transportation: swimming, walking, flying, etc.
2. Embryology and Ontogeny: development and changes that an embryo goes through as it changes from the fertilized egg to the organisms’ mature form.
3. Phylogenetic Relationships: history of a species or group of related species.
A 20.0 g sample of metal with a specific heat of 1.50 J/(gºC) raised its temperature from 25 ºC to 100 ºC. How much heat in J was absorbed by the sample of metal?
a.)2,250 J
b.)5,276 J
c.)0.177 J
d.)750 J
Answer:
A
Explanation:
What variables can affect the number of fish in a lake
Answer:
well it could be the pollutoin or the amount of fish or predoators
Explanation:
also dont go word for word this is just a basais of things you could do
Answer:
How much people fish in the lake, how cold the weather gets, if there are any dangerous compounds added to the water, how many eggs the fish lay that spring...
Explanation:
Why is pollen needed in plant reproduction?
fertilization takes place in the pollen
pollen contains the egg cell
pollen contains the sperm cell
egg cells stick to pollen
Answer:
The pollen contains the sperm cell.
Explanation:
When the pollen grain lands on the stigma and begins to grow a tube, the pollen tube grows down the style to the ovary. Each pollen grain contains a male reproductive cell known as the sperm cell. The sperm cell will go down the tube and unite with an egg cell in the ovary. When the egg cell and the sperm cell unite, fertilization occurs. This newly fertilized egg will make many new cells and will grow into a tiny plant embryo. The embryo is located in the ovule. The ovule is located inside the ovary. The ovule grows into a seed. The plant embryo usually remains in the seed until it is planted in the soil. The stigma, style, ovule, and ovary all make up the female part of the flower called the pistil.
Hope this helps!
this illustration shows a kind of animal that is a free living organism
which term is the common name of this organism?
A. Amoeba
B. Planarian
C. Fluke
D. Tapeworm
Answer: Planarian
This is the answer i know because i've seen them before
Answer:
b
Explanation:
What is the mass of a 450 centimeter³ block of silicon if the density of silicon is 2.336 grams/centimeter³?
1. 193 g
2. 192.6 g
3. 1051 g
4. 1051.2 g
In an electric motor, a force is applied to the electromagnet by
A. a battery
B. a commutator.
C. an electric current.
D. a permanent magnet.
An electric current
What is an electric current?
"Electric Current is the rate of flow of electrons in a conductor. The SI Unit of electric current is the Ampere".
What are electromagnets?
"An electromagnet is a type of magnet in which the magnetic field is produced by an electric current".
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The DNA is organized in bundles called _______.
Answer:
Chromosomes
Explanation:
Hope this helps