Grace wanted to find out the best conditions for growing lettuce plants.
She took 4 trays and planted 8 lettuce plants in each.
The results of her investigation are shown below.

How many days did the investigation last?
Use the table to help you.

Answer:auditory tube

Explanation

The structure that regulates air pressure between the external atmosphere and the middle ear cavity is known as the Eustachian tube.

The ear is a type of organ of hearing and balance which consists of a cavity in the skull structure lined with soft tissue. It surrounds three distinct spaces filled with air or fluid i.e. the outer, middle, and inner ear. These specialized spaces host both the sound transmission apparatus and the sensory apparatus.

Types of bones present in the ear are

1. Hammer shaped bone known as malleus which is attached to the eardrum.

2. Anvil shaped bone known as incus present in the middle of the chain of bones.

3. Stirrup shaped bone known as stapes is attached to the membrane-covered opening which connects the middle ear with the inner ear (oval window).

The cavity of the middle ear is a narrow air-filled space which is a slight constriction divides it into an upper and a lower chamber known as tympanic cavity proper below and the epitympanum above. The main function of the Eustachian tube is to equalize the air pressure between the environment and the middle ear.

Thus, the structure that regulates air pressure between the external atmosphere and the middle ear cavity is known as the Eustachian tube.

Learn more about Ear, here:

https://brainly.com/question/3535321

#SPJ2

The best technique for your mother is that she uses each word in a sentence to give it a meaning, and remember it better (option 2).

Elaborative rehearsal is a common technique used to remember information in a long-term way. Due to this, this technique can be used to move information from short-term memory to long-term memory.

In this technique, the main purpose is to associate the new information with something you already know. In learning new words, this can include:

In this context, the technique that is part of elaborative rehearsal is using the word in a sentence (option 2).

Learn more in: https://brainly.com/question/11231513?

Answer:

1.255hpq

Explanation:

hope it helps po...

Answer:

Hepatitis definitely but Herpes is double stranded but I’m not sure.

Explanation:

Answer:

If you don’t cite where you got your information from, there could be horrible consequences. If you don’t cite your references and use that work as your own, your subject to plagiarism.

Explanation:

Answer:

If you don’t cite where you got your information from, there could be horrible consequences. If you don’t cite your references and use that work as your own, you are subject to plagiarism.

Explanation:

Warm and acidic water leads to bleaching of coral reef and the new algae can survive due to mutation in its gene.

The biggest threat to coral reefs in the Persian gulf is the warming of waters due to climatic change as well as acidification of water. Algae present on coral reefs can't tolerate acidic water as well as warm water which leads to the death of algae and the coral looks white or colorless.

A new organism was the most commonly found algae throughout the gulf's coral reefs due to change in the genetic makeup due to harsh climatic conditions so we can conclude that warm and acidic water leads to bleaching of coral reef and the new algae can survive due to mutation in its gene.

Learn more: https://brainly.com/question/25778242

From an agronomical point of view, there is a lot that the grower can do to maximize sugarcane yield. Proper crop nutrition is an important factor to achieve this.

In a large number of cases, nutrients that drive sugarcane yield forward, will also improve the sugar content and quality of the harvested sugarcane crop.

Most required nutrients have specific roles to play in improving yield:

Predator/prey web relationship is found in all ecosystem. A rise in the snowy owl population would have what effect on the snow goose in that The snow goose population would rise due to lemming, and subsequently fox, populations declining.

In North America, predators such as wolves, coyotes and foxes mostly hunt for mice, rabbits and deer.

Learn more from

https://brainly.com/question/14805215

From the distances between genes and their order, it is possible to get recombination frequencies per region (simple and double recombination frequencies). The probability of obtaining a unc-32 vab-7 + offspring is 0.09 = 9%.  

---------------------

We are usually asked to get the order of genes in a chromosome. To do so, we need to get the distances between genes. And to get distances between genes, we need to get their recombination frequency.

When three genes are involved, we get the distances by taking the recombination frequency, P, per region.

We talk about regions, R, when we are making reference to the space between two genes.

                Gene 1 -----(R1)----- Gene 2 --------(R2)------ Gene 3

                                    P1                               P2

⇒  P1 = (SR + DR) / N

⇒  P2 = (SR + DR)/ N

Where:

The genetic distance will result from multiplying that frequency by 100 and expressing it in map units (MU). One centiMorgan (cM) equals one map unit (MU).  

In the exposed problem, we need to do the inverse way. We already have the order and distances between genes, and we need to get the recombination frequency, P.

We know that the order of genes is as follows,

unc-32 ------------- vab-7----------------- dpy-17

Distances are:

We need to get the probability of obtaining a phenotypic unc-32 vab-7 + offspring from a cross between a heter0zyg0us fly (unc-32 vab-7 dpy-17/ + + +  ) and the triple recessive nematode (unc-32 vab-7 dpy-17 / unc-32 vab-7 dpy-17).

Cross:  

unc-32 vab-7 dpy-17 / + + +     x     unc-32 vab-7 dpy-17 / unc-32 vab-7 dpy-17

To get the genotype unc-32 vab-7  + , a simple recombination, SR, must occur in region 2.

So we need to get the simple recombination frequency in Region 2.

To do so, first we need to clear the following equation

Distance between vab-7 dpy-17 = P2 x 100 = 20 MU

20MU = P2 x 100

P2 = 20  / 100

P2 = 0.2

The recombination frequency in region 2 (P2) is 0.2.

Now, we need to get the simple recombination frequency in this region.

P2 = (SR + DR) / N

P2 = Simple recombinants Frequency + Double recombinants Frequency

P2 = Simple recombinants Frequency + Double recombinants Frequency

0.2 = Simple recombinants Frequency + 0.02

Clearing the equation,

Simple recombinants Frequency = 0.2 - 0.02 = 0.18

Simple recombinant frequency in region 2 will produce the following two chromosomes,

So half of this frequency will produce one chromosome, and the other half will produce the other chromosome.

So, the probability of obtaining a phenotypic unc-32 vab-7 + offspring is 0.09 = 9%.

---------------------------------

You can learn more about recombination frequency at

https://brainly.com/question/11105396?referrer=searchResults

https://brainly.com/question/22641120?referrer=searchResults

https://brainly.com/question/7299933?referrer=searchResults

Answer:

A system that uses the sun's energy without requiring mechanical devices (pumps or fans) to distribute the collected heat are called solar system while radiator system uses fuel to heat the water. in active solar heating system, the SUN's energy used to heat water.

The comparison of an active solar heating system with a radiator system gives;  Solar systems use the sun's energy to heat water without the need for mechanical equipment to disperse the heat, where radiator systems require fuel to heat the water.

Active solar heating systems employ solar energy to heat a fluid (liquid or air), which is then transferred to the interior area or stored for later use.

In conclusion, an active solar heating system and a radiator system are all subs of heat energy

Read more about Energy

https://brainly.com/question/13439286

Answer:

D. It is better for the cell if most molecules are prevented from

entering

Explanation:

Answer:

Atmospheric patterns are also tied to the planets rotation

It would greatly change the way air currents move

1. Science is the greatest collective endeavor. It contributes to ensuring a longer and healthier life, monitors our health, provides medicine to cure our diseases, alleviates aches and pains, helps us to provide water for our basic needs – including our food, provides energy and makes life more fun, including sports, music, entertainment and the latest communication technology. Last but not least, it nourishes our spirit.

2. Science generates solutions for everyday life and helps us to answer the great mysteries of the universe. In other words, science is one of the most important channels of knowledge. It has a specific role, as well as a variety of functions for the benefit of our society: creating new knowledge, improving education, and increasing the quality of our lives.

3. Science must respond to societal needs and global challenges. Public understanding and engagement with science, and citizen participation including through the popularization of science are essential to equip citizens to make informed personal and professional choices. Governments need to make decisions based on quality scientific information on issues such as health and agriculture, and parliaments need to legislate on societal issues which necessitate the latest scientific knowledge. National governments need to understand the science behind major global challenges such as climate change, ocean health, biodiversity loss and freshwater security.

4. To face sustainable development challenges, governments and citizens alike must understand the language of science and must become scientifically literate. On the other hand, scientists must understand the problems policy-makers face and endeavor to make the results of their research relevant and comprehensible to society.

5. Challenges today cut across the traditional boundaries of disciplines and stretch across the lifecycle of innovation -- from research to knowledge development and its application. Science, technology and innovation must drive our pursuit of more equitable and sustainable development.

Answer:

variation,inheritance,high rate of populations growth,differential survival and reproduction

please follow me and Mark me brainliest please

Here,

Mass of the object = 10 kg

Linear momentum of the object=100kg m/s

And , we have to find it’s velocity??

But we do know that linear momentum (p) is mass(m)× velocity (v)

P=m×v

V=p/m

Substituting the value here we get,

V= 10/100

Therefore, v= 0.1m/s.

The difference that can be attributed to both PAMPs and DAMPs is ;

Both PAMPs and DAMPs always posses their own derivation, DAMPs goes with host cell which could be  tumor cells, dead or dying cells,  and PAMPs on the other hand is been drive inflammation in response to infections.

Learn more about DAMPs at;

https://brainly.com/question/2684713

Respiration (both aerobic and anaerobic) begins with glycolysis in the cytoplasm of a cell;

1 glucose molecule (C₆H₁₂O₆) is converted into 2 molecules of pyruvate in a 10-step process, consuming 2 ATPs and yielding 4 ATPs;

Additionally, 2 NAD+ molecules are reduced to NADH molecules;

In aerobic respiration, each pyruvate molecule then goes through the link reaction, getting converted to acetyl co-A in the mitochondrial matrix, producing 1 CO₂ molecule and 1 reduced NADH molecule;

Acetyl co-A then enter the Krebs or tricarboxylic acid cycle (TCA) where 2 CO₂, 1 ATP, 3 NADH (by reduction of NAD+) and 1 FADH₂ molecules are produced;

The NADH and FADH₂ molecules produced are electron carriers required for the electron transport chain (ETC);

The electron transport chain consists of 4 proteins within the inner mitochondrial membrane which are involved in the production of ATP by oxidative phosphorylation;

The first protein (C1) is responsible for oxidising NADH to NAD+, releasing energy used to generate the proton motive force (PMF) by pumping the protons (H+ ions) into the intermembrane space and the electrons released are transferred to a ubiquinone molecule;

The second protein (C2) is responsible for oxidising FADH₂ to FADH, also releasing energy used to generate the proton motive force (PMF) and, similarly to C1, the electrons released are transferred to ubiquinone;

The third protein complex (C3) transfers the electrons from ubiquinone to cytochrome C;

Finally, cytochrome C transfers these electrons to the fourth complex (C4), where they combine with free protons in the matrix and O₂ to to produce H₂0;

The PMF is then harvested via an ATP synthase protein where H+ flood back into the mitochondrial matrix, and the energy released is used to generate ATP from ADP and Pi;

ATP is now ready for use for bodily processes requiring it.

Answer:

All living things excrete waste, word unscrambled

Linkage maps and physical maps are NOT the same. A linkage map measures the number of recombination events in a given chromosome fragment.

A linkage map is based on the frequency of recombination events between genes or molecular markers.

This frequency indicates the number of events in which a single chromosomal fragment recombines between two or more genes or molecular markers during meiosis.

Conversely, a physical DNA map indicates the physical locations of genes (molecular markers) and nucleotide (DNA) sequences of interest, which is useful to identify genes by positional cloning.

Learn more in:

https://brainly.com/question/13769

Answer: the correct answer is D

Explanation:Carrying capacity is characterized as the maximum populace size that a domain can continue inconclusively.  For most species, there are four factors that factor into figuring the carrying capacity of an individual population: food accessibility, water resources, habitat, and ecological conditions.

In a graph representation of population size in a time period increases until it reaches carrying capacity, carrying capacity is representing in the graph where the increase in curve becomes stable and makes a plateau.

Answer:

the nuclear envelope sentence goes to PROPHASE

The chromosomea align in sentence goes to METAPHASE

Answer:

rising temperatures, droughts, shifting patterns of precipitation and longer growing seasons, plants and animals are evolving to keep pace. Biologists have observed squirrels and salmon developing at an accelerated pace, causing them to reproduce at a younger age.

Answer:

The nutrients from the grass was the origin of the energy.

Explanation:

Hope this helps :)

The CRISPR-Cas system is a genome engineering tool to edit the genome of any species. The crRNA is a sequence complementary to the target DNA of this genome editing system.

The CRISPR-Cas genome editing system is a recently developed genome engineering tool, which can be used to edit the genome of virtually any species.

This genome editing system consists of a nuclease (Cas) protein that cuts the DNA at the targeted regions, and a single guide RNA (sgRNA), which contains a crRNA (17-20 nt) sequence complementary to the target DNA.

In consequence, the sgRNA guides to the Cas protein in order to cleave the genome at targeted nucleotide sequences.

Learn more in:

https://brainly.com/question/12880230

Answer:

c)dense connective

Explanation:

Answer:

c) dense connective

Explanation: