Trilobites are used as index fossils because

Answer:

F proton pumping to maintain a proper pH level

Answer:

The survival and proper functioning of an organism depends on a finely tuned interface between genome and environment, nature and nurture. The interface that regulates gene expression through environmental feedback is called the epigenome.

Explanation:

Answer:

40 million years ago

The earliest whales that we think were fully aquatic, that is, they never left the water, are found around 40 million years ago, during the middle Eocene. That means that the transition from terrestrial animals to fully aquatic animals took about 12 million years.

Explanation:

Answer:

After they nursed under water

Explanation:

Answer:

I think yes, humans are an invasive species.

Explantation:

        I think humans are an invasive species because they are everywhere, and very few places in the world do not have humans. Humans are in control of the planet because of their number. Humans are not going to be extinct ever. They are always going to be here on earth. If somebody finds new land, they make a base/camp and send other people to live there and to populate it. Like in North america, settlers came and sent men to live there. They hunted animals and set up homes. Then, more and more people came and soon all that is left is a over populated land with citys and cars and humans everywhere.

I hope this helps. :)

Answer: Asexual

Explanation: Since only one parent is needed, asexual reproduction is more beneficial. It is a "simpler" (in terms of not needing two mates to fornicate) and causes species to reproduce at a faster rate

Answer:

its 2 3 4

Explanation:

Answer:

Electrons are much smaller in mass

Explanation:

Although similar in mass, protons are positively charged, while neutrons have no charge. Therefore, the number of neutrons in an atom contributes significantly to its mass, but not to its charge. Electrons are much smaller in mass than protons, weighing only 9.11 × 10−28 grams, or about 1/1800 of an atomic mass unit.

Answer:

The two problems that the transfer of information from DNA to protein must overcome are:

Explanation:

The genetic information is found in the DNA and depends on a specific sequence of nitrogenous bases. This information is transcribed into the messenger RNA, whose base sequence is organized into triplets and codons, each of which encodes an amino acid, as well as establishing the pattern for starting and stopping the synthesis of a protein.

The DNA must be transcribed into messenger RNA (mRNA), a process that occurs in the nucleus of the cell. mRNA leaves the nucleus and travels to the cytoplasm, where amino acid synthesis will take place.

Once in the cytoplasm mRNA binds to ribosomes, structures in charge of translating the sequence of nitrogenous bases RNA to synthesize amino acids. The set of ribosomes and rough endoplasmic reticulum are in charge of the assembly of amino acids to produce peptides and proteins.

Answer:

It is B

Explanation:

I had this question on my test last week.

Answer:

flame was extinguished after a few seconds because the jar keeps oxygen from the outside from getting in.

Explanation:

Running out of oxygen makes the flame go out.

Answer:

A chromosome is a single, long molecule of DNA. These highly organized structures store genetic information in living organisms. Small sections of the chromosome, called genes, code for the RNA and protein molecules required by an organism.

Answer:

A. Carries urine to bladder

B. Excretes urine out of body

C. Stores urine temporarliy

D.Produces urine

Explanation: Hope this helps!!

The identification of the functions of the labeled parts is as follows:

A. Carries urine to bladder

B. Excretes urine out of body

C. Stores urine temporarliy

D.Produces urine

In this way, the identification could be made

learn more: https://brainly.com/question/1605083?referrer=searchResults

Answer:

1. they are the most complex green flowering plants

2. they are vascular plants

3. they have well developed and complete flower

4. they are mainly terrestrial plants

5. they are seed plants with seed enclosed in the fruit

Explanation:

hope this helps

Answer:

use this to help you I'm sure you're teacher already reached you how to used this.

Answer:

I can tell you some difference but I cant find similarities

Explanation:

they each have thier own heat area

they are each a different breed

they each have thier own cold area

they each come from a different family tree

this all I can really see I hope this helped at least a bit

Answer:

All the embryos have a similar wormlike shape, but they have different features. For example, the amphibian has a large bubble shape in the middle and the fish has a smaller bubble shape. The others don’t have a bubble shape.

Explanation:

Got it off of Edmentum :)

Answer:

B. into an aquifer

Explanation:

People can obtain groundwater by drilling a well into an aquifer.

An aquifer is a porous and permeable formation where groundwater can be found.

Answer:

b. into an aquifer

Explanation:

Answer:

Explanation:

Shortage of nutrients in an ecosstem can harm an organism because when nutrients are scarse or very limited for organism and did not meet up with the organism requirements, there will be reduced metabolism and this can cause malfunction. Shortage of nutrients can lead to decline in growth and can lead to spring up of some diseases in the organism because enough nutrients us not available for good metabolic processes and fight diseases.

For example when an organism is deficient in vitamins and carbohydrates, the organism will not have energy to power metabolic processes and for it's activities and vitamins deficient will make the organism not to have the ability to fight against disease.

Too much of nutrients also affect organisms negatively. When there is much build up of nutrients, it can be harmful to the organisms and restrict metabolic processes.

For example too much of nutriwnts like too much of fat can block blood artieries and veins and thus can lead to inability of blood to flow .

Answer:

According to the diagram, the digestive organs on the pink targets includes:

a.) Liver, c) esophagus, d) gall bladder, e)Stomach, I) Small intestine j) Pancreas

The source of each digestive enzyme or fluid on the blue targets includes: b) bile, f) pepsin, g) Intestinal enzymes, h) Pancreatic juice.

Explanation:

The digestive system is the collective name used to describe the alimentary canal, accessory organs and a variety of digestive processes that takes place at different level in the canal to prepare food eaten for absorption.

Accessory organs of digestion generate various secretions which are poured into the tract to aid in the digestion of the food taken. They include: salivary gland, pancreas (secrets pancreatic juice), liver ( secrets bile), gall bladder ( stores bile).

Answer:

Explanation:

Datos disponibles:

Podríamos establecer que M es el alelo dominante, mientras que m es el alelo recesivo.

A partir de la información brindada, podríamos suponer que:

Opción 1:

La miopia es un caracter expresado por un gen dominante. Si este fuera el caso, entonces al menos uno de los padres debería tener miopia para poder heredarle al hijo el alelo dominante para expresar el caracter. Si este fuera el caso, los posibles genotipos de los padres serían:

Parental)  Mm   x   mm (al menos uno de los padres con miopia)

F1) 1/2 Mm (Hijo miope)

    1/2 mm (Hijo con visión normal)

Pero en este caso, los dos padres tienen visión normal, entonces si el gen dominante expresa la miopia, los genotipos de los padres serian homocigotas recesivos, mm. Si ambos padres son homocigotas recesivos, no podrían heredarle a ningun hijo el alelo de la miopia. En este caso, la cruza sería:

Parental) mm    x    mm

F1) 100% mm (todos los hijos con visión normal)

Sin embargo, para el ejemplo planteado, los dos padres tienen visión normal, uno de los hijos tiene visión normal y el otro tiene miopia, lo que nos conduce a la segunda opción.

Opción 2:

La miopia es un caracter heredado por un gen recesivo, m. Mientras que la visión normal es heredada por un gen dominante, M. Entonces, si este fuera el caso, para que ambos padres con visión normal, tengan un hijo homocigota recesivo para el caracter, entonces ambos padres deberian ser heterocigotos. Su hijo miope heredaría un alelo recesivo de cada padre y expresaría el defecto. El genotipo de las personas con miopía sería entonces homocigota recesivo. Esta cruza sería de la siguiente manera:

Parental) Mm    x    Mm  (Ambos padres heterocigotas)

Gametos) M   m     M     m

Cuadro de Punnet)

                M             m

     M       MM         Mm

     m       Mm         mm

F1) 3/4 o 75% de probabilidad de tener un hijo con visión normal

    1/4 o 25% de probabilidades de tener un hijo miope.

Entonces, podemos concluir que:

Answer:

Hello! This answer would be the same as original cell!

Explanation:

I really hope this helps!

Answer:

it depends on the type of injury people usually stop feeling pain long before the broken bone has healed such as a fractured bone can take up to 6-8 weeks

Explanation:

Answer:

Repairing or reparative phrase begins within the 1st few days after the bone fracture last for about 6 to 8 weeks. During this time, the body develops cartilage tissue in and around the fracture site. Children's bones normally heal faster than adults.

hope this helps

Answer:

Fine adjustment and diaphragm

Explanation:

Answer:

c

Explanation:

Answer:

a biome

Explanation:

a species is a type of animal kind, a population is the number of a certain species, an ecosystem is basically a big web of nature that is connected. so we can rule those 3 out. a biome is a part of land with similar climates and organism population

Answer:

A

Explanation:

Answer:

A. By classifying objects or events by their characteristics

Explanation:

Answer:

A. The fruit absorb them, which gives the fruit its color

Explanation:

basta yunn

Answer:

The mushroom population will decrease.

Explanation:

The animals introduced into the forest will likely eat the mushrooms.

Answer:

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Answer:

I think its D

Explanation:

(sorry if its wrong)