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:
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
When would you use a dry mount to view a specimen under a microscope? When would you use a wet mount?
Answer:
dry first wet last. i honestly dont know but good luck
When would you use a dry mount to view a specimen under a microscope?:
A dry mount is exactly as it sounds: the thing you plan to observe is placed on the slide with a cover slip over it. No water is needed. This kind of mount is usually used for inanimate objects or things that do not need water to live.
When would you use a wet mount?:
In a wet mount, the specimen is placed in a drop of water or other liquid held between the slide and the cover slip by surface tension. This method is commonly used, for example, to view microscopic organisms that grow in pond water or other liquid media, especially when studying their movement and behavior.
plzzzzzzzzzzzzzzzzzzzzzzzzzzzz help me!!!!! p.s this due tonight!!!
What are some things you know the body needs to function? Explain your answer.own words
Answer:
the body needs food water air to survive.
Explanation:
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:
Which statement would be MOST important to include in a summary of the article? (A) Water erodes surface rocks through normal rainfall and severe storms. (B) Skeletons of marine organisms remain in the ocean to become part of the rock cycle. (C) Humans contribute to the rock cycle through actions that create artificial erosion of rock formations. (D) Erosion and deposition are usually gradual processes but can be observed through extreme weather events.
Answer:
In the summary you should probably put A because it makes the most sence for the topic.
Explanation:
Which of the following best explains what would happen to animal cells if plant cells did not perform photosynthesis?
A. Animal cells would not be able to produce glucose through cellular respiration.
B. Animal cells would not be able to process energy from sunlight.
C. Animal cells would not be able to produce oxygen through cellular respiration.
D. Animal cells would not have the materials needed to produce energy in cellular respiration.
Answer:
D. Animal cells would not have the materials needed to produce energy in cellular respiration.
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
please Which two of the following sentences from the article include central ideas of the article?
1. Over long periods of time – millions and millions of years – all rocks play a part in Earth's
recycling system.
2. Magma that intrudes or pushes itself into layers and cracks of existing rocks underground
forms intrusive igneous rocks, like granite.
3. The only parts of the rock cycle that we can easily observe are the surface processes that
break down rocks, called erosion, and that build up rocks, called deposition.
4. There are many types of landslides, but they all involve large amounts of moving rocks.
(A) 1 and 3
(B) 1 and 4
(C) 2 and 3
(D) 2 and 4
Answer:
I'm not sure which article you're talking about, but I'll go with B: 1 & 4.
Explanation:
As I said, I'm not 100% percent sure. Hope this may be right.
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.
Learn more about photosynthesis here.
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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 does something become a limiting factor?
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.
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!
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.
before DNA was discovered, in which materials did scientists think the gentic material was stored? a. proteins b. carbohydrates, c. nucleic acids, d lipids
In pea plants, the allele for purple flowers is dominant over the allele for white flowers.
The flower color of one pea plant is represented by PP.
What is the genotype?
What is the phenotype?
Answer:
the genotype is PP
the phenotype is PURPLE
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:
What taxonomic group do homo sapiens belong to
( **VERY URGENT**)
Answer:
Phylum: Chordata
Class: Mammalia
Order: Primates
Your answer is Mammalia : )
Explanation:
Hope this helps : )
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
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
A cell is placed in a beaker of solution. After the cell is placed into the beaker, students observe that it increases in size. Which statement best explains the process being modeled by the cell?
A. The processes needed for the cell to reproduce.
B. The processes needed for the cell to communicate with other cells.
C. The processes needed for the cell to take in nutrients.
D. The processes needed for the cell to move.
just the top one plz and thxs
Answer:
Sorry I really just need points.
Explanation:
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
Are human cells more similar to plant cells or bacterial cells? Explain how you know.
Human cells are more similar to plant cells since they both contain a nucleus.
There are two types of cells namely eukaryotic cells and prokaryotic cells.Eukaryotic cells are cells that contain a nucleus while prokaryotic cells are cells that do not contain a nucleus.Human cells and plant cells are both eukaryotic cells since they both contain a nucleus, while bacterial cells are prokaryotic cells since they do not contain a nucleus.Thus, Human cells are more similar to plant cells since they both contain a nucleus.
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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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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.
The survival of organisms is impacted by air temperature. Which two main spheres are involved?
Group of answer choices
Hydrosphere and biosphere
Geosphere and biosphere
Atmosphere and biosphere
Atmosphere and geosphere
Answer:
Hydrosphere and biosphere
Explanation:
In pea plants, the allele for purple flowers is dominant over the allele for white flowers.
The flower color of one pea plant is represented by (PP).
What is the genotype?
What is the phenotype?
Answer:
genotype-PP phenotype purple
Explanation:
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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