can someone give me an example on how to write dichotomous keys please
Answer:
"For example, in tree identification, a dichotomous key might ask whether the tree has leaves or needles. The key then directs the user down one list of questions if the tree has leaves, and a different question list if it has needles."
Explanation:
is evolution real or fake?
Answer: False
Explanation:
Answer:
man its fake if its real thats stupid
Explanation:
What is litmus paper? How is it used to determine if a compound is an acid or base?
Answer:
Litmus paper is a tool used to test whether a substance is an acid or base. When a substance is dissolved in water, the resulting solution causes the litmus paper to change color. The acidity or alkalinity of a solution is determined by the concentration of hydrogen ions, or power of hydrogen, expressed as a pH value.
(I think this is right I'm not totally sure.)
If you put oxygen in a balloon will it go up? Or helium?
Answer:
only helium makes balloons go up so the answer is helium
Explanation:
NEED HELP
Which of the following is true about cells and organisms?
A. cells and organisms carry out similar functions.
B. cells and organisms have similar structure.
C. cells and organisms represent the same level of organization.
D. cells and organisms do not carry out similar functions.
Answer: I'm not sure but i beilive its B
Explanation
Thread-like structures that are found in the nucleus of a cell that contains all DNA. *
A. DNA
B. Genes
C. Chromosomes
D. Nucleus
Answer:
chromosomes
Explanation:
Thread-like structures that are found in the nucleus of a cell that contains all DNA. Each chromosome is made of protein and a single molecule of DNA. Human cell nucleus contains 46 chromosomes or 23 pairs. Half of these chromosomes come from one parent and half come from the other parent.
Shows its specific trait when both parents pass the gene to the offspring *
A. Main Traits
B. Dominant Traits
C. Recessive Traits
D. Inherited Traits
Answer:
D. Inherited Traits
Consider a large group of seedlings growing beneath an oak tree. Why would they compete for space?
Answer:
for growth
Explanation:
just think about it
what happens to the number of similarities in organisms as you move down the levels on the chart
Answer:
they decrease
Explanation:
sry if wrong
This part acts like the brain of the cell. *
A. DNA
B. Genes
C. Chromosomes
D. Nucleus
Answer:
i gues is the c
Explanation:
Answer:
D. Nucleus
Explanation:
This is the part of the cell that carries out orders for the rest of the cell.
Which of the following is a true statement?
A Periods form horizontal rows; groups form vertical columns
B Groups form horizontal rows; periods form vertical columns
C Categories form horizontal rows; gases form vertical columns
D Gases form horizontal rows; categories form vertical columns
Answer:
D.
Explanation:
Explain how cell organelles are similar to an organ system.
Answer:
thanks
Explanation:
The main difference between organ and organelle is that organ is a large part of an organism, composed of tissues which perform similar functions whereas organelle is a specialized structure found inside cells, which carries out a specific life process. ... But, organs are macroscopic and only found in animals and plants.
ASAP I NEED THIS NOW!!!!!!!
Planet A Planet B Planet C Distance from Sun 0.718 AU 1 AU 5.20 AU Mass 4.8676 × 1024 kg 5.9726 × 1024 kg 1,898.3 × 1024 kg Planet Composition rocky mantle, iron core rocky mantle, iron core hydrogen, helium Gases in Atmosphere 96% carbon dioxide, 3% nitrogen, 1% other 78% nitrogen, 21% oxygen, 1% other mostly hydrogen and helium Atmospheric Pressure on Planet’s Surface 92 bars 1 bar > 1,000 bars Average Temperature 464°C 15°C -108°C Part A Which of these planets is Earth? Explain your answer.
Which term names the process in which an organism makes a new organism?
mutation
reproduction
fertilization
variation
reproduction i'd say
hope it helps
What is the Author’s message in the Passage?
D. People should save water.
E. Water will soon be limited.
F. We need to use more water.
Answer:
D.
Explanation:
In the passage, the Author lists many ways that you can conserve or save water.
Hope I helped! Please leave a comment or a rating!
pleasee choose the correct answer
Answer:
Between mars and Jupiter
Explanation:
between mars and jupiter is where the astriod belt is located. (between the rock and gas planets)
What type of acid is used in automobile batteries? How does this acid cause a battery to work?
When a rock starts to change color, rust, and break down, it is caused by _____
1wind
2erosion
3mechanical weathering
4chemical weathering
Answer:
the answer is 4
Explanation:
What are some factors that affect an element’s reactivity?
Answer:
Four major factors affect reactivity of metals: nuclear charge, atomic radius, shielding effect and sublevel arrangement (of electrons). Metal reactivity relates to ability to lose electrons (oxidize), form basic hydroxides, form ionic compounds with non-metals.
Explanation:
The rate of photosynthesis can be determined by measuring the rate that reactants are used up by a plant or by measuring the rate that products of photosynthesis are produced by a plant. How would placing a plant in a dark room for 24 hours affect the rate of photosynthesis?
A. The rate of photosynthesis would increase and the plant would take in more water.
B. The rate of photosynthesis would decrease and the plant would produce more sugar.
C. The rate of photosynthesis would increase and the plant would produce more oxygen.
D. The rate of photosynthesis would decrease and the plant would take in less carbon dioxide.
Answer:
The answer is D.
The photosynthetic reaction produces oxygen and sugar. When a plant is placed in the dark then the rate of photosynthesis decreases due to less intake of carbon dioxide, Thus, option D is correct.
What is photosynthesis?Photosynthesis has been said a reaction that uses light energy to form chemicals like glucose and carbon dioxide. The rate of photosynthesis is determined by the product formation from the reactants consumed.
Light is a factor that determines the rate of photosynthesis as solar energy is used to split the water molecule and carbon dioxide to produce oxygen and sugar molecules.
The concentration of carbon dioxide and sunlight are rate-determining limiting factors. Less amount of carbon dioxide will be available for plants to intake and hence less reactant will be produced.
Therefore, option D. less carbon dioxide will be present in the room.
Learn more about photosynthesis, here:
https://brainly.com/question/1388366
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the first person to answer correctly gets brainiest
describe the cellular evidence that both plant and animal cells obtain energy through cellular respiration.
Answer:
Explanation:
The glucose required for cellular respiration is produced by plants. Plants go through a process known as photosynthesis. Photosynthesis can be thought of as the opposite process of cellular respiration. Through two processes known as the light reactions and the dark reactions, plants have the ability to absorb and utilize the energy in sunlight. This energy is then converted along with water and carbon dioxide from the atmosphere into glucose and oxygen. Since this is the opposite process of cellular respiration, plants and animals are said to have a symbiotic relationship. This means that plants and animals live together and benefit from each other.
help What characteristic do all organic compounds have in common?
Answer:
All organic compounds contain carbon.
Explanation:
we doing the same thing and this was the possible answer.
Answer:
1. They all contain carbon.
2. Most of them are flammable.
3. They are all soluble in non-polar solvents.
4. They are most, if not all, are covalently bonded molecules.
Explanation:
PLEASE ANSWER ASAP ASSIGNMENT IMAGES BELOW !!!!
Yo can someone help me out
What is the primary difference between genetic modification and artificial selection?
IN YOUR OWN WORDS
Question: How do different variations lead to evolution of species?
We have learned that mutations and sexual reproduction can lead to variations. Variations that allow an organism to survive in its environment are considered adaptations. The variation with the best adaptation for the environment will survive and reproduce while the others will eventually die off. If the environment changes, a different variation may survive instead. For your final project you will model this in a lab assignment.
Background Information:
Pretend there is an organism on earth called a weezy. There are three variations of weezys: ones with two arms and hands with five fingers (weezy A), ones with one arm and hand with five fingers (weezy B), and ones with one arm and hand with three fingers (weezy C).
Weezys are eaten by smurfs. To protect themselves from smurfs, weezy's build towers out of rocks and climb up to the top of them. Because smurfs can’t climb, the weezys are safe if they manage to get to the top. However, weezys must build their towers quickly because smurfs are extremely fast. The ones who build their towers quickly enough survive, but the ones that are too slow usually get killed by smurfs.
In this activity, you will simulate the three variations of weezys in a population. You will measure how long it takes you to build the tower while pretending to be each type of weezy. You will do three trials for each weezy. As you are doing the activity, complete the data table below. When you are finished, answer the questions that follow.
Model:
Identify what you will use to represent the rocks for your tower. (You need 10)
Write your material here:
Describe how you will model weezy C.
I will____________________________to model weezy C.
Tower Building Time
Trial 1 time (seconds)
Trial 2 time (seconds)
Trial 3 time (seconds)
Average (seconds)
Weezy A
9.7
9.7
8.1
9.2
Weezy B
10.9
9.5
12
Weezy C
13.6
13.5
12.7
For extra credit, create and insert a graph of your data.
Analysis Questions
Directions: Use your data to answer the following questions.
Identify the weezy that built the tower the fastest. Explain why this weezy was able to build this tower the fastest.
The weezy that built the tower the fastest was Weezy__________.
This weezy built the tower the fastest because
Identify the weezy that was the slowest at building the tower. Explain why this weezy built so slowly.
The weezy that built the tower the slowest was Weezy__________.
This weezy built the tower the slowest because
3. Which of the following graphs shows how the Weezy population would change over time based on the current variations and environment?
Letter:
4. Right now you have Weezy A, B and C variations. Describe how a new “Weezy D” variation might enter the population in generations to come.
Weezy D may enter the population if there is a(n)______________________________________. This means
5. If Weezy D did enter the population, explain what would need to happen for it to continue to be part of the population. (Be sure to use the words harmful, neutral and/or beneficial).
If Weezy D entered the population ____________________________would need to be _______________________. This would mean that Weezy D could
6. Explain how the population and variations of Weezys will change after years and years of being hunted by smurfs. Be sure to include evidence from your data and the background information to support your answer.
Over many years of being hunted by smurfs the variations of Weezys would be _______________.
Weezy A would…
Weezy B would…
Weezy C would…
My evidence from the data is…
My evidence from the background information is…
This means that…
Grading Scale:
Standards
1
Not Meeting Expectations
(49%)
2
Partially Meeting Expectations
(69%)
3
Meeting Expectations
(84%)
4
Exceeding Expectations
(100%)
8.MS.LS3-1
Answered questions 4 and 5 but received little to no credit.
Half credit for questions 4 and 5.
Or
Full Credit for question 4 and no credit for 5
Or
Full Credit for question 5 and no credit for 4
Full Credit for Question 4 and missing part of explanation for question 5.
Full Credit for Questions 4 and 5.
8.MS.LS4-4
Answered questions 1,2,3 and 6 but received little to no credit.
Partial credit for questions 1,2,3, and 6
Or
Partial Credit for 3 out of 4 questions and full credit for the other.
Or
Full credit for 2 out of 4 questions and little to no credit for the others.
Full credit for 2 out 4 of the questions (1,2,3,6) and partial credit for others.
Full Credit for Questions 1,2,3 and 6
Answer:
Evolution is the process by which populations of organisms change over generations. Genetic variations underlie these changes.
Jimmy finds a hunk of something. It appears to be an element. It melts at 500*C and when it was run over by a train, it got crushed and shattered. What is it likely to be? *
A. Metal
B. Nonmetal
C. Metalloid
Answer:
C. Metalloid
Explanation:
I believe that's the answer, correct me if I'm wrong.Answer:
c. metalloid
Explanation:
because it melts in 500 degrees and in able to get crushed
The transfer of traits from one generation to the next is *
A. Genetics
B. Inheritance
C. Heredity
D. Chromosomes
C: Heredity.
Because
answer each one please!
1. What factors shaped the cliffs of Victoria, Australia over time?
2. How do you know a rock has been or is being weathered?
3. How are weathering and erosion different?
Answer:
Explanation:
1.The powerful surf and the salt of the erratic and moody Southern Ocean started to erode the rugged limestone cliffs along Victoria's Coastline.
2.Animals that burrow underground, such as moles, gophers or even ants, can also cause physical weathering by loosening and breaking apart rocks. Dens and tunnels are signs of this type of weathering. Other animals dig and trample rock on the Earth's surface, causing rock to slowly crumble apart.
3.When the smaller rock pieces (now pebbles, sand or soil) are moved by these natural forces, it is called erosion. So, if a rock is changed or broken but stays where it is, it is called weathering. If the pieces of weathered rock are moved away, it is called erosion.
characteristic of plant and give your example
WILL MAKE BRAINLIEST
Explanation:
Plants are multicellular eukaryotic organisms with cell walls made of cellulose. Plant cells also have chloroplasts. In addition, plants have specialized reproductive organs. These are structures that produce reproductive cells. Male reproductive organs produce sperm, and female reproductive organs produce eggs. Male and female reproductive organs may be on the same or different plants.
Answer:
Characteristics of Plants:
Plants need air
They grow
They adapt to their environment
They interact with their environment
They need nutrients
They need water
They reproduce
Example: Cactus, Flowers etc.