19. Why is Tiktaalik such an important transitional fossil?

Answers

Answer 1

Answer:

Its mix of characteristics of fish and of tetrapods suggest that it represents one of the moments in the transition between fish and tetrapods. them have found fossils.

Explanation:


Related Questions

Where are most mountains on Earth fomed?

Answers

Answer:

asia

Explanation:

Answer:

Mountains are most often formed by movement of the tectonic plates in the Earth's crust. Great mountain ranges like the Himalayas often form along the boundaries of these plates. Tectonic plates move very slowly.

Explanation:

Body processes are regulated by which nutrients?
proteins
carbohydrates
All options are correct
lipids

Answers

I think..............

All options are correct




Answer:

C

Explanation:

Protiens, Carbohydrates, and Lipids all influence bodily processes.

Use the concept of negative feedback to explain body temperature control in humans.

Answers

Answer:

Negative feedback is a vital control mechanism for the body's homeostasis. ... When body temperature drops, the hypothalamus initiates several physiological responses to increase heat production and conserve heat: Narrowing of surface blood vessels (vasoconstriction) decreases the flow of heat to the skin.

Vhat function does the cytoplasm perform in plant and animal cells?
A. It directs cellular activity.
B. It holds the cell organelles.
C. It forms a cellular boundary.
D. It makes proteins for the cell.

Answers

the answer is b ..........

Explanation:

b

To move the objective lens up and down, I would turn the _________ __________ dial. Which two words complete the sentence? ps: i gave 100 points so answer

Answers

Answer:

knob and the dial are the words

Sarah and Thomas are thinking about having kids. They are concerned that because Thomas’s father was diagnosed with cystic fibrosis last year, it could run in the family. Cystic fibrosis is a recessive genetic disorder which affects the respiratory system. Both Thomas and Sarah get tested for the recessive allele (f), with the results indicating that they are each carriers of the disorder (a genotype of Ff).
Is it possible for Sarah and Thomas to develop cystic fibrosis?

Answers

Answer:

No they can not develop it because they are carriers and do not have ff only Ff, but their kids have a high chance of getting it. (50% chance)

Explanation:

Complete with the right sign: -9/11 -10/9 I I

Answers

Answer:

either -20.01 or -1.79

Explanation:

-9/11-10/9=-20.01

9/11-10/9=-1.79 it is probably the 20.01 answer.

Help plzzzzzzzzzzzzzzz

Answers

Answer:

B) they make the spindle fibers

Explanation:

Answer : Ibelieve it’s to store food not sure but I think so



Figure 1 shows a seaside cliff. Figure 2 shows the same cliff after a period of time has passed. What caused the change from figure 1 to figure 2? A. rainfall only B. ocean waves only C. wind D. rainfall and ocean waves

Answers

B. Because sea salt can cause rough texture over time & what is in the sea water٫ can cause sea foam ect.

Answer:

I think its A. because i have this test and its not B

i hope this is helping you!!!!!

Explanation:

What type of cell division is occurring in the
diagram to the left?
A. Mitosis I and Mitosis Il
B. Meiosis I and Meiosis Il
C. Synthesis
D. Mitosis I and Meiosis Il

Answers

292920202020202020220202020303030

if the egg of a particular butterfly has 14 chromosomes, how many chromosomes will be found in a somatic cell for this butterfly - PLEASE HELP DUE TONIGHT ​

Answers

Answer:

not

Explanation:

If the egg of a particular butterfly has 14 chromosome, then the somatic cells will have same 14 chromosomes.

What are somatic cells?

A somatic cell, also known as a vegetal cell, is any biological cell other than a gamete, germ cell, gametocyte, or undifferentiated stem cell that forms the body of a multicellular organism.

These cells make up the body of an organism and divide via binary fission and mitotic division.

Mitosis is a cell division process that produces somatic cells. They have two copies of each chromosome, one from the mother and one from the father. Diploid cells usually have two copies each of each chromosome.

Mitosis is the method by which one cell splits into two genetically identical daughter cells.

The cell's chromosomes are copied and then distributed evenly between the two new nuclei of the daughter cells during the various stages of mitosis.

Thus, as these are somatic cells, they will have same number of chromosomes.

For more details regarding somatic cells, visit:

https://brainly.com/question/11348645

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4. Which of the following would be the best control sample for the study?
A)
A sample of water collected just downstream of the southern forest
(B) A sample of water collected just downstream of the housing development
C)A sample of water collected just downstream of the northern forest
D)A sample of distilled water

Answers

Answer:

D. A sample of distilled water

Explanation:

You need to have a control sample that hasn't been messed with to see what would happen if you had no reaction to your experiment

A sample is the smaller set of data which a researcher makes use of to complete a research.

As a result of this, we can see that a sample study is the use of these samples to come to a conclusion about the investigation or research which is going on.

Some examples of a sample study include:

Simple random sampling. Systematic sampling.  Stratified sampling, etc

Please note that your question is incomplete so i gave you a general overview which would help you get a better understanding of the topic.

Read more here:

https://brainly.com/question/21977459

The least amount of solar energy on an annual basis is experienced at

Answers

Answer: the least amount of solar energy is experienced at the poles

Explanation:

The Earth is roughly spherical. The sun’s light hits directly at the equator, but at a steep angle at the poles, so the amount of light per unit area is less at the poles.

how do you know that individual 1 is heterozygous for the trait

Answers

Heterozygous is having 2 different alleles of a certain gene, meaning one is not dominant. Instead one is a recessive such as Aa

Cytoplasm
Ribosomes
Nucleoid
Plasma membrane
(Peptidoglycan
Cell wall
Outer membrane
Capsule
a
Prokaryote

B
Eukaryote


Answers

I can’t the problem it’s all black

Which statement is an example of how structure relates to function?




An allele for purple flowers is dominant and an allele for white flowers is recessive

Mitochondria have a highly folded membrane which increases the amount of ATP that can be made.

DNA transcribes into RNA, and RNA translates into proteins.


Heredity is the passing of genetic information from parent to offspring.

Answers

Answer:

Mitochondria have a highly folded membrane which increases the amount of ATP that can be made.

Which organelle, found only in plant cells, has the function of storing starch?

Answers

Answer:

Explanation:

Plant Plastids are the only organelle Plant cells have that store starch

Plastids Plant plastids
Plastids. Plant plastids are a group of closely related membrane-bound organelles that carry out many functions. They are responsible for photosynthesis, for storage of products such as starch, and for the synthesis of many types of molecules that are needed as cellular building blocks.

Vertebrates have a notochord, dorsal nerve cord, and gill slits at some point during
embryonic development.
True
False

Answers

Answer:

True.

Explanation:

Animals in the phylum Chordata share five key characteristics that appear at some stage during their development: a notochord, a dorsal hollownerve cord, pharyngeal gill arches or slits.

What was the foundation of Georges Lemaître’s Big Bang Theory?

Answers

Answer:

Georges Lemaître, Belgian astronomer and cosmologist who formulated the modern big-bang theory, which holds that the universe began in a cataclysmic explosion of a small, primeval “super-atom.” A civil engineer, Lemaître served as an artillery officer in the Belgian Army during World War I. After

Explanation:

hope it helps!

(b)
The image below shows part of the surface of a leaf.
0.1 mm x 0.1 mm
The length and width of this piece of leaf surface are both 0.1 mm

Calculate the number of stomata per mm of this leaf surface.

Answers

Explanation:

You didn't attach a picture so i'll just explain how to find the number of stomatas/mm^2.

first you find the surface by multiplying the length by the width

0.1*0.1=0.01mm^2

now you count the numer of stomatas in the picture

in0.01mm^2 you have.........................x stomatas

in 1mm you have ...............................y stomatas

y=100x

Mitosis goes through two divisions to create diploid cells. true or false

Answers

Answer:

false

Explanation:

mitosis goes through one division cycle

Answer:True.

Explanation:

Can someone please help me??



Which type of reproduction is responsible for genetic variation?

Answers

Answer:

sexual reproduction

Explanation:

Sexual reproduction results in infinite possibilities of genetic variation. In other words, sexual reproduction results in offspring that are genetically unique. They differ from both parents and also from each other.

Other reproductions like asexual, budding or fragmentation don't produce genetic variation.

The type of reproduction is responsible for genetic variation is - sexual reproduction.

Sexual reproduction is combining genetic information from two individuals,  by the fusion of gametes such as sperm and egg, called fertilization which generates more genetic variation, by the process like the combination of alleles and crossing over.

Parents and offsprings are not identical in this reproduction type, however, they are genetically similar.Fusion or combination of two different parent's gametes.There is recombination take place which causes genetic variations as well.

Thus, the correct answer that is responsible for genetic variation is - sexual reproduction.

Learn more about sexual reproduction:

https://brainly.com/question/21499942

BIOLOGY PLS HELP!!! A 5% salt cell is placed in a 15% salt solution. What type of solution is this cell in?
a) hypotonic
b) hypertonic
c) isotonic

Answers

Answer:b

Explanation: the solution is more concentrated (hyper) than the cell is

hyper means more than and hypo means less than like hyperthermia (too hot) or hypothermia (too cold)

Can someone please help me meee

Answers

Answer:

A. fallopian tube

B. ovary

C.  cervix

D. endometrium

hope this helps!! :)

Explanation:

Answer:

A. fallopian tube B. ovary C.  cervix D. endometrium

Which describes chemical digestion? *

Answers

Mechanical digestion

The cell was first discovered by who?and in what year

Answers

Answer:

Robert Hooke and 1665

Explanation:

Question:

The cell was first discovered by who?and in what year.

Answer:Robert Hooke

Year of 1665

The cell has a rich and interesting history that has ultimately given way to many of today's scientific advancements.

#CARRYONLEARNING #STUDYWELL

SOMEONE PLEASE HELP ME WITH THIS I REALLY WANT TO PASS!!!!!!!!!!

Answers

Its fossils or its nvm its definitely fossils

I WILL GIVE BRAINLIEST TO THE WHOEVER HELPS ME

Answers

Answer:

Most tissues of the body grow by increasing their cell number, but this growth is highly regulated to maintain a balance between different tissues. In adults most cell division is involved in tissue renewal rather than growth, many types of cells undergoing continuous replacement.

Explanation:

Internal monitors called checkpoints track each step of the cell cycle. In the cell cycle, there are three main checkpoints; one at the end of G1, a second at the transition of G2/M, and a third during the metaphase. Positive molecules of the regulator allow the cell cycle to proceed to the next level.

Mitosis, although continuous process, is conventionally divided into five stages: prophase, prophase, metaphase, anaphase and telophase.

I hope this helps! :)

What is Jupiters water availability?

Answers

Answer:

Long thought to be virtually dry, it turns out that Jupiter has significant water. New data from NASA's Juno spacecraft, which launched in 2011 and is orbiting the planet right now, suggests that water makes up about 0.25% of the molecules in Jupiter's atmosphere

Explanation:

the planet has about 0.25% of water that makes up the planet

5. Why do thorns and spines exist? *
O To stop animals from eating plants
To stop insects from pollinating
To stop people from looking at plants
O To help plants stay standing upright and give them their shape

Answers

Answer:

to stop animals from eating plants

Explanation:

the thorns and spines help protect the plant for example if we touch the plant it hurts same goes with animals

Answer:

A. To stop animals from eating plants

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