Answer:
(B.) The index fossils are the same geological age.
Explanation:
When they are the same fossil, but in two different locations we know that they are both most likely the same age.
How does Nitrogen get from the atmosphere to the soil?
Answer:
Plants get their nitrogen indirectly from the air via microorganisms in the soil and in certain plant roots.
Answer:
Microorganisms and certain plant roots in the soil
Explanation:
"Plants get the nitrogen that they need from the soil, where it's already been fixed by bacteria and archaea. Bacteria and archaea in the soil and in the roots of some plants have the ability to convert molecular nitrogen from the air (N2) to ammonia (NH3)... Such organisms are called "diazotrophs". From here, various microorganisms convert ammonia to other nitrogen compounds that are easier for plants to use. In this way, plants get their nitrogen indirectly from the air via microorganisms in the soil and in certain plant roots."
I hope this helps...
what are the chamber of human heart
Answer:
atrium,ventricle,lungs,pulmonary
Explanation:
Blood enters the right atrium and passes through the right ventricle. The right ventricle pumps the blood to the lungs where it becomes oxygenated. The oxygenated blood is brought back to the heart by the pulmonary veins which enter the left atrium.
Organize the following words from smallest to largest in size and list them below.
virus, carbon atom, hydrogen atom, water molecule, bacterial cell, plant cell, animal cell, mitochondrion, chloroplast, glucose molecule, nucleotide, a condensed chromosome, nucleus, ribosome, human brain, human, petri dish, sucrose molecule, glycine (an amino acid), tryptophan (an amino acid)
Answer:
Hydrogen atom
Carbon atom
Water molecule
Glucose molecule
Sucrose molecule
ribosome
Virus
Mitochondrion
glycine
Bacterial cell
Plant cell
Animal Cell
human brain
human
Explanation:
Atoms are the smallest particle and they can not be broken down into further pieces. The molecules are made up of two or more atoms. Cell is made up of two or more molecules.
35 points please help science biology
Euglena are unicellular organisms classified into the Kingdom Protista, and the Phylum Euglenophyte. All euglena have chloroplasts and can make their own food by photosynthesis. They are not completely autotrophic though, euglena can also absorb food from their environment; euglena usually live in quiet ponds or puddles.
Euglena move by a flagellum (plural ‚ flagella), which is a long whip-like structure that acts like a little motor. The flagellum is located on the anterior (front) end, and twirls in such a way as to pull the cell through the water. It is attached at an inward pocket called the reservoir. Color the reservoir grey and the flagellum black.
The Euglena is unique in that it is both heterotrophic (must consume food) and autotrophic (can make its own food). Chloroplasts within the euglena trap sunlight that is used for photosynthesis, and can be seen as several rod like structures throughout the cell. Color the chloroplasts green. Euglena also have an eyespot at the anterior end that detects light, it can be seen near the reservoir. This helps the euglena find bright areas to gather sunlight to make their food. Color the eyespot red.Euglena can also gain nutrients by absorbing them across their cell membrane, hence they become heterotrophic when light is not available, and they cannot photosynthesize.
The euglena has a stiff pellicle outside the cell membrane that helps it keep its shape, though the pellicle is somewhat flexible and some euglena can be observed scrunching up and moving in an inchworm type fashion. Color the pellicle blue.
In the center of the cell is the nucleus, which contains the cell's DNA and controls the cell's activities. The nucleolus can be seen within the nucleus. Color the nucleus purple, and the nucleolus pink.
The interior of the cell contains a jelly-like fluid substance called cytoplasm. Color the cytoplasm light yellow. Toward the posterior of the cell is a star-like structure: the contractile vacuole. This organelle helps the cell remove excess water, and without it the euglena could take in some much water due to osmosis that the cell would explode. Color the contractile vacuole orange.
Activity
EXplain why a complex food web is better than a simple food chain for the survival of the community.
Answer:
A complex food web is better than the simple food chain because the food web links together the relationships between a producer, consumer, and decomposers. Another reason why a complex food web is better than a simple food chain is that if a particular species is eliminated from a food web, the entire ecosystem has a lower chance of collapsing due to that loss. A food web can more readily react to changes in the environment that impact one or more species.
Hope this helps :)
Answer:
(Answers may vary.)
A complex food web is more important than a simple food chain for the survival of a community. The food web is more important because it is more intricate and adaptive than a food chain. A community houses many species. These species are dependent on each other for energy and food. So, there are multiple relationships of energy transfer involved.
A food chain is linear, which means that each predator has only one source of food. So the predator is vulnerable if the food source is depleted through disease or a change in environmental conditions. Whereas in a food web, each predator has many food sources. A complex food web provides multiple preys to species at a higher trophic level. As a result, a food web illustrates the feeding relationships between many species at different trophic levels in an ecosystem.
Explanation:
Answer for plato
Budding is a type of asexual reproduction. Which of the following is an disadvantage for asexual reproduction?
what do the nucleus cell, mitohondira cell, cell wall, chloroplast cell, cyptoplasm cell, and cell mabrane do?
Answer:
nucleus- this is where all genetic information is stored.
mitochondria- where respiration occurs
cell wall- gives the cell structure and prevents it from bursting
chloroplast- contain chlorophyll which stores energy from the sun for photosynthesis
cytoplasm- where chemical reactions occur
cell membrane- controls what comes in and out of the cell.
mitochondria: where respiration occurs
cell wall: gives the cell structure and prevents it from bursting
chloroplast: contain chlorophyll which stores energy from the sun for photosynthesis
cytoplasm: where chemical reactions occur
cell membrane: controls what comes in and out of the cell.
Can you think of any structures in the human body that may have once had a job but are no longer necessary?
Answer:
I bealive Vestigial organs or appendix no longer have pourpose.
Explanation:
-
Is salivary amylase a carbohydrate, lipid, nucleic acid or protein?
Answer:
Amylase
Explanation:
How can water be monitored to assure it is safe for human consumption?
Answer:
By inspecting it under a microscope or boiling it to make sure no dangerous bacteria are inside.
Explanation:
True or false consumption efficiency in Huckleberry patches is high like in a forest ecosystem
Answer:
True
Explanation:
Researchers grew populations of identical Escherichia coli (E. coli) bacteria in a growth medium that contained a low concentration of glucose and a high concentration of citrate, a substance that is not typically consumed by E. coli. For thousands of generations, the bacteria used only glucose as an energy source and grew relatively slowly and to a low density because of the low concentration of glucose. After about 30,000 generations, one population emerged that began to rapidly grow to a much higher density. The researchers hypothesized that the bacteria evolved the ability to use citrate as an energy source and referred to them as Cit . To test the hypothesis, the researchers grew separate populations of the Cit bacteria and bacteria from the original population (Cit- ) in a growth medium that contained only citrate. Describe one outcome that would demonstrate that a given population has evolved.
Answer:
The colony of bacteria is called cit positive, or cit in case these advance with colonization in media with citrate, since if they grow in number and proliferate, it means that they use citrate as a metabolite or food resource for their metabolism.
Explanation:
In case these are negative cit, the profileration would have to be null or see that the colony stagnant its growth, that is to say that they did not increase in number or even decrease their number layers and they did not replicate in media with citrate.
The colony of bacteria is named cit positive, or cit just in case these advance with colonization in media with citrate.
Since if they grow in number and proliferate, it means they use citrate as a metabolite or food resource for metabolism.
In case these are negative cit, the proliferation would have to be null or see that the colony stagnant its growth, that is to say, that they did not increase in number or maybe decrease their number layers and that they didn't replicate in media with citrate.
What about E.coli?
E. coli, a species of bacteria that lives harmlessly in every person’s gut by the billions. A typical E. coli contains about 4,000 genes (we have about 20,000). Feeding on sugar, the microbe grows till it's able to split in two.
It makes two copies of its genome, nearly always managing to supply perfect copies of the first. The single microbe splits in two, and every new E. coli receives one of the identical genomes. These two bacteria are, in other words, clones.
Therefore, E.coli grows in presence of citrate that evolved in the population of 30,000 generations.
Learn more about E.coli here:
https://brainly.com/question/746793
which of these increases as greenhouse gases pollution increases
a.thickness of freshwater ice sheets
b. ocean salinity
c. ocean surface temp
d.rate of thermohaline circulation
Answer:
The answer is C.The ocean surface temp
Explanation:
I'm not sure of it but Greenhouse gases pollution raise the rate of Global warming so i think the temp one works the most
why it is important to reduce friction in moveable joints
Answer:
Smooth cartilage prevents friction as the bones move against one another. in freely moveable joints, the entire joint is enclosed inside a membrane filled with lubricating synovial fluid, which helps to provide extra cushioning against impact.
Using academic language, explain why we always see the same face of the Moon.
GIVING BRANLIEST HELP ME PLEASE!!!
Answer:
B I think, Good luck
Explanation:
Answer:
A: The ability to maintain homeostasis
Explanation:
Hope this helps:)
What organism has a diploid number of 32 what would be the number of chromosomes found in the cells of the organism undergoing mitosis?
Answer:
American badger (Taxidea taxus) and Alfalfa (Medicago sativa)
Explanation:
American badger (Taxidea taxus) and Alfalfa (Medicago sativa) have 32 number of chromosomes in the somatic cells while on the other hand, there are 18 number of chromosomes in the sex cells of both American badger and Alfalfa due to haploid number of chromosomes. When the cell of American badger and Alfalfa undergoes mitosis, the parent cell divides and produces two daughter cells having diploid number of chromosomes.
Why am I smart in some subjects but not others?
Answer:
it goes with your interest
Answer:
The subject you are smart in is the subject you are more interested in but you also would like all subjects and progress great in them you just have to find the right learning space or techniques
Explanation:
In science, which of the following best describes the scientific term
theory? *
A) An educated guess
B) An idea with lots of evidence to support it
C) possible idea that needs more evidence to be real science
D) An undisputed law that will not change.
PLEASE ANSWER!!!!!!!
Answer:
here's your answer
Explanation:
b) an idea with lots of evidence to support it .
In science, the word theory refers to a comprehensive explanation of an important feature of nature that is supported by many facts gathered over time. Theories also allow scientists to make predictions about as yet unobserved phenomena.
Why do you think it is winter in the southern hemisphere while it is summer in the northern hemisphere?
Answer:
yes
Explanation:
just to be nice could you mark this as brainleist please?
Happy Holidays!
What is the bond created between the negative and positive ends of the water molecules
Answer:
The slight positive charges on the hydrogen atoms in a water molecule attract the slight negative charges on the oxygen atoms of other water molecules. This tiny force of attraction is called a hydrogen bond. This bond is very weak.
Explanation:
please answer my question
Cells that become the _________ undergo a ____________ to __________ transition first. Fill in the blanks.
4. [7 pts] In threespine stickleback fish, independently assorting genes determine the extent of body armor (left) and pelvic spines (right): You cross two full-armored, full-spined parents and get these offspring: 79 full-full; 23 full-armored w/ reduced-spines. a) State one set of possible genotypes for the parents: Parent 1: __________; Parent 2: __________ b) What are the dimensions of the smallest Punnet square you can use to confirm your answer to Part (a)
Complete question:
You will find the complete question in the attached files (PNG)
Answer and Explanation:
You will find the complete answer and explanation in the attached files (PDF) due to technical problems.
Which of the following is an example of a lipid?
phospholipid.
triglyceride
fats and oils.
all of these
Answer:
phospholipid
Explanation:
Phospholipids, triglycerides, fats, and oils are examples of a lipid. Therefore, option D is correct.
What are lipids?Fatty, waxy, or oily molecules are referred to as lipids. They are soluble in organic solvents but insoluble in polar solvents like water. Steroids, phospholipids, oils, and waxes are examples of lipids. They are usually referred to as fats and oils.
Since lipids may be broken down to provide significant amounts of energy, one of their primary biological purposes is the storage of energy. The structural elements of cell membranes and a number of the body's messengers and signaling molecules are also formed by lipids.
Cell membranes, cholesterol, blood cells, and the brain are just a few places where they can be found in the human body.
Learn more about lipids, here:
https://brainly.com/question/3498396
#SPJ6
(Q005) Humans are unusual because our cultural practices can actually change our environmental circumstances. We can change the environment in which natural selection acts on our traits. Describe how this process has played out in the evolution of adult lactose tolerance. Describe how this process has played out in the maintenance of the sickle-cell trait. Can you hypothesize any similar situations where our future evolution may be influenced by cultural practices we have today?
Answer:
sickle cell disease or sickle cell disease is about the inheritance of metaplastic cells or cells that do not respect normal cell morphology from the mother or father to a child.
This is not associated with cultures, instead lactose tolerance is.
Explanation:
Lactose tolerance is basically an adaptation of the body in those humans who continue to drink milk throughout their lives, once the growth stage is over, milk should be suspended, although some continue to consume it and lactase continues to be encoded and expressed.
Some people for cultural reasons or environmentalist lifestyles do not drink animal milk, but rather vegetable milk.
Match the bone or bony structure with the structure with which it articulates. Match the words in the left column to the appropriate blanks in the sentences on the right. Make certain each sentence is complete before submitting your answer. ResetHelp 1. : head of radius 2. : glenoid cavity 3. : manubrium 4. : radial notch of ulna 5. : ulnar notch of radius 6. : olecranon fossa of
Answer:
The Sternal end of the Clavicle goes with the Manubrium of the sternumThe Olecranon process of Ulna articulates with the Olecranon fossa of the HumerusThe Capitulum articulates with the Head of RadiusThe Head of Humerus articulates with the Glenoid Fossa of the Scapula or the Glenoid CavityThe Head of Radius articulates with the Radial notch of UlnaHead of Ulna articulates with the Ulna notch of RadiusCheers!
What molecule, when linked
with others, creates a single link
in the DNA chain?
Answer:Figure 4: Double-stranded DNA consists of two polynucleotide chains whose nitrogenous bases are connected by hydrogen bonds.
Explanation::))))))))))))))))))))))
In meiosis when the cells divide again, what happens to the number of chromosomes?
identify and describe one natural and one man made source of carbon in the carbon cycle?
Why are snails classified as a gastropod mollusks?
Answer: Snails have soft bodies and are protected by shells, which are the characteristics of gastropods mollusks.