What occurred during the Cambrian explosion? How is this significant in terms of common ancestry?

Answers

Answer 1
The Cambrian Period marks an important point in the history of life on Earth; it is the time when most of the major groups of animals first appear in the fossil record. This event is sometimes called the "Cambrian Explosion," because of the relatively short time over which this diversity of forms appears

Related Questions

Some people think that the immigrants in this photograph are serious. This is best shown in their
A. actions.
B. possessions.
C. expressions.
D.clothing.

Answers

Answer:

actions

Explanation:

Answer:

A.

Explanation:

i think the right answer is A.actions. i hope i helped!

Nasolacrimal duct opens into

a) Anterior part of inferior meatus.

b) Vestibule of nose.

c) Middle meatus.

d) Superior meatus​

Answers

Answer:

a) Anterior part of inferior meatus.

Explanation:

The inferior meatus is the largest of the three. It lies below the inferior concha and above the nasal cavity. It extends most of the length of the nasal cavity's lateral wall. It is broader in the front than at the back, and presents anteriorly the lower orifice of the nasolacrimal canal.

# Jerry Don is here#

Answer:

Anterior part of inferior meatus

Explanation:

A diagram has been attached to let you make clear

Explain the disadvantages and advantages of each type of cell division.

Answers

Answer:

advantage-this is the final separations of the already duplicate molecular units, involving chromosomal assortment and cytoplasm decisions. all eukaryotic cells undergo mitotic decision while gemetes undergo meiotic division

The advantages of mitotic division:

It provides growth and development of the body.Dead cells of the body are removed or replaced.It mediates the equal distribution of chromosomes. Repair of the body takes place by the addition of new cells.

What are the disadvantages of mitosis?

The disadvantage of mitosis is that it involves a little genetic variation among the cells which induces the risk for the same diseases or disorders that are already occurred in the existing cells.

The advantages of the meiotic division:

It increases the genetic variations in the population of organisms from one generation to the next. Gametes are produced by meiosis.

The disadvantages of the meiotic division:

It lacks the pace at which an organism can divide.It always requires two gametes.

Therefore, it is well described above.

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Which of the following muscles adducts the arm?
O A. deltoid
O B. sternocleidomastoid
O C. latissimus dorsi
O D.subscapularis
O E. serratus anterior

Answers

Answer:

c

Explanation:

Adduction is accomplished primarily by the pectoralis major, latissimus dorsi, teres major, triceps, and coracobrachialis.

What is the tree of life and how does it relate all living things according to Aristotle words

Answers

Answer:

palm oil

Explanation:

they use palm oil to prepare food I'm also used to to prepare alcohol drink.

which animal has blue blood ??​

Answers

Answer:

spiders

Explanation:

While humans and many other species have red blood, due to the iron in their hemoglobin, other animals have different colored blood. Spiders(as well as horseshoe crabs and certain other arthropods) have blue blood due to the presence of copper-based hemocyanin in their blood. Some animals, such as the sea cucumbers, even have yellow blood.

Answer:

The octopus has blue blood

Explanation:

RNA is sometimes the genetic material in ______________.

Answers

Answer:

RNA viruses

Explanation:

have genome composed of RNA that encodes a number of proteins.

The answer is to you’re question is definitely RNA viruses.

A parent plant has the genotype TTRr for height and seed shape. What are the 4 possible combinations of these genes in the plants gametes?​

Answers

The answer to your question is probably TT Tr TT Tr

Plssss help meee!

Which of the following cell(s) is the end product after Meiosis I?
1)two diploid daughter cells
2)one diploid cell
3)two haploid daughter cells
4)one haploid cell

Answers

Answer:

C IS THE ANSWER, YOU GOT IT CORRECT

Explanation:

In contrast to a mitotic division, which yields two identical diploid daughter cells, the end result of meiosis is haploid daughter cells with chromosomal combinations different from those originally present in the parent.

Which sentence best describes evolution?


Changes in genetic structure of a population occur over time.


Individuals inherit different characteristics.


Populations remain unchanged over time.


An individual grows and changes during its lifetime.

Answers

Answer:

changes in genetic structure of a population occur over time.

Explanation:

cuz that's how evolution be working

The option (A) is correct. The best sentence best describes the evolution is changes in genetic structure of a population occur over time.

What is evolution?

Evolution is change in the heritable characteristics of biological populations over successive generations. These characteristics are the expressions of genes that are passed on from parent to offspring during reproduction.

Moreover, evolution is the change in heritable traits of biological populations over successive generations. Evolutionary processes give rise to diversity at every biological organization level. All life on earth shares a common ancestor known as the last universal ancestor.

Therefore, evolution is important because it explains how life developed on Earth and how different species are connected. The evolutionary linkages aid in the addressing of biological challenges, as well as the diversity of life.

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A mineral used as a building material is?
halite.
sulfur
calcite
platinum

Answers

Answer:

Calcite is used in limestone

Explanation:

Halite is used as a source of sodium for food processing

Which fossil fuel is primarily composed of methane?

A: Petroleum
B: Coal
C: Natural gas
D: Geothermal Energy

Answers

Answer:

The answer is C.) Natural gas

Explanation:

Natural gas is a concoction of hydrocarbon-rich gases. It is formed deep within the crust of the earth. The most prevalent component of natural gas is methane, a molecule containing one carbon atom and four hydrogen atoms (CH4). This is the energy that is utilized to heat and power homes, businesses, automobiles, and factories. I hope this helps! ^-^

explain how the xylem vessel is adapted to it's function.​

Answers

The cells that make up the xylem are adapted to their function: They lose their end walls so the xylem forms a continuous, hollow tube. They become strengthened by a substance called lignin . Lignin gives strength and support to the plant.

Which process takes place during the G1 phase of the cell cycle?


A.
mitotic spindle formation


B.
formation of chromatids


C.
DNA replication


D.
none of the above

Answers

Answer:

C. Dna Replication

because G1 is an intermediate phase occupying the time between the end of cell division in mitosis and the beginning of DNA replication

Answer and I will give you brainliest

Answers

Answer:

Hope this helped enjoy your day or night

Explanation:

Which of the following is associated with areas of karst topography?
A.sinking streams
B.caverns
C.all of the above
D.sinkholes

Answers

Answer:

C

Explanation:

Karst is a Topography formed with rocks. All 3 contain it

C is the answer all three definitely have it

What part of the brain has been linked to dissociative identity disorder?

A. Cerebellum
B. Amygdala
C. Hypothalamus
D. Hippocampus

Answers

Answer:

There are two answers. option B and D

Explanation:

hope this helps.

please help me i need this right now i will make you brainleist

make diagram about the transformation of energy coming from the sun ​

Answers

Diagram:

                Sun

                 /

               /

   Plant or Trees

           \

             \

        grasshopper

                 /

              /

     Chicken ---- Humans

         /

       /

    Fox

      \

        \

      Lions

note: sun → producers → primary consumer → secondary consumer → Tertiary consumer → predator. All the animals after their death, decomposes and from there energy is released.

Why do you think cartilage and not bone connects the two os coxae in the front?

Answers

A cartilage is used to connect two os coxae in the front because it resists tensile, shearing and compressive forces and is capable of a small amount of movement under physiological conditions.

Functions of cartilaginous joints

Joints are areas where two or more bones articulates. There are different types of joints which include:

Fibrous joints

cartilaginous joints and

synovial joints.

Cartilaginous joints allows more movement than a fibrous joints. They are found between the two os coxae bones of the hip because

It is capable of resisting tensile and compressive forces, and

it is capable of small amount of movement under physiological conditions such as during labour.

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in dna, the 3' carbon on the surgar of one necleotide is attached to the 5' carbon on the sugar of the next nucleotide by a

Answers

Answer:

Phosphodiester bond

Explanation:

The question is essentially asking what is the name of the bond that connects nucleotides.

what type of molecule is oil

a.carbohydrate
b.lipid
c.protien
d.enzyme

Answers

Answer:

b.lipid

Explanation:

Enzymes speed up reaction rates by changing...

activation energy.

hydrogen bonds.

pH.

substrates.

Answers

Enzymes lower activation energy required to carry out a process. So the answer is activation energy

Enzymes usually speed up the reaction by changing activation energy. The correct option is A.

What is activation energy?

In chemistry, activation energy is the minimum amount of energy to activate molecules or atoms to the point where they can cause chemical transformation or accessible and usable.

Heating is generally the source of activation energy, with reactant molecules absorbing thermal energy from their surroundings.

The activation energy is determined by the nature of the chemical transformation, not by the relative energy states of the reactants and products.

As the temperature rises, molecules will move and collide more frequently. Additionally, the molecules carry more kinetic energy.

As a result, as temperature rises, so does the proportion of collisions that can overcome the activation energy of the reaction.

Enzymes typically accelerate reactions by changing the activation energy.

Thus, the correct option is A.

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What is a membranous organelle?
I also need advice on something else, see comments.

Answers

Answer:

membranous organelles are cytoplasmic organelles that posses a bounding membrane of their own and they include cell membrane, mitochondria, endoplasmic reticulum, Golgi apparatus, lysosomes, and peroxisomes.

Explanation:

:3 hope this helped

The occipital lobe is the largest lobe in the human brain.


t or f

Answers

Answer:

False

Explanation:

The frontal lobe is the largest lobe

Answer:

FALSE

Explanation:

>:)


How are the concepts of
nutrent density and calone.
control addressed in the food Guide Pyramid

Answers


Nutrition is how food affects the health of the body.food is essential-- its provides vital nutrients For Survival And Help The Body Functions To Stay Healthy.

What does the codon sequence on the mRNA strand determine?
A. The amino acid sequence of the polypeptide
B. The signaling sequence
C. The gene sequence of the DNA
D. The codon that is signaled

Answers

C is the correct byyyyyyyyyyyyyyyyyyyyeeeee

The amino acid sequence of the polypeptide is determined by the codon sequence on the mRNA strand. Therefore, option (A) is correct.

What is a codon?

The genetic code is a system of principles that all living cells follow in order to decipher the information that is contained inside their genetic material and turn it into proteins.

The genetic code is comprised of a set of three-letter combinations of nucleotides known as codons. Each codon is associated with a particular amino acid or a stop signal. In 1961, Francis Crick and several of his colleagues were the first people to formally articulate the idea of codons.

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Nuclear power plants have a _____, net energy Yield.

A: Low
B: Increedibliy high
C: Very high
D: almost zero

Answers

B: incredibly high


Due to the fact that nuclear power plants use energy dense atoms which release alot of energy

Answer: A: Low

Explanation: Nuclear power has a low net energy yield because large amounts of energy are needed for each step in the nuclear power fuel cycle.

The chemical equation shown represents photosynthesis​

Answers

Answer:

sunlight(energy),water, carbon dioxide=oxygen and glucose

Explanation:

brainliest appreciated!!

What’s the difference between a theory and a hypothesis

Answers

Answer: A theory explains a natural phenomenon that is validated through observation and experimentation.

A hypothesis is an educated guess based on certain data that acts as a foundation for further investigation.

hope this helps!

In 5-6 sentences, explain the difference between genotype and phenotype. How can mutations be harmful or beneficial?

Answers

A phenotype is an individual's observable traits, such as height, eye color, and blood type. The genetic contribution to the phenotype is called the genotype. Some traits are largely determined by the genotype, while other traits are largely determined by environmental factors.
Example of phenotype; height, wing length, and hair color
Example of genotype; hair color, eye color, height, shoe size

Mutations can affect an organism by changing its physical characteristics (or phenotype) or it can impact the way DNA codes the genetic information (genotype). When mutations occur they can cause termination (death) of an organism or they can be partially lethal.
Beneficial Mutations
They lead to new versions of proteins that help organisms adapt to changes in their environment. Beneficial mutations are essential for evolution to occur. They increase an organism's changes of surviving or reproducing, so they are likely to become more common over time.
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