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The oldest fossils discovered by scientists are of unicellular prokaryotes. Fossils of later
organisms suggest that organisms that are now classified as plants, animals, and fungi
evolved from protists. What does this fossil evidence indicate about the evolution of life
on Earth?
A At some point in Earth's history, plants and fungi evolved into animals.

B. Throughout Earth's history, many simpler forms of life became more complex.

c. Most early life forms lived near deposits of sedimentary rock.

D. Throughout its history, Earth's geologic formations have changed.

Answer:

streak, pour

Explanation:

The streak method is the most popular technique used to isolate specific bacteria from a sample containing different microorganisms. In this technique, a sterile loop is employed to obtain an uncontaminated microbial culture. Colony picking refers to the process where colonies of pure bacteria are selected in order to duplicate them by transferring them into new agar plates. Moreover, the pour plate method is the most popular technique employed to count the number of colony-forming bacteria (i.e., bacteria/ml) in a specimen. The pour plate method consists of dropping the sample on a sterile plate and subsequently molten-cooled agar is then poured into the plate and mixed well with the inoculum.

Answer:

streak, pour

Explanation:

The streak plate method involves spreading an inoculum onto the surface of a plate in a pattern that results in isolated colonies in some areas of the plate after incubation, whereas the pour plate method involves diluting an inoculum into several melted agar tubes and then adding their contents into plates for solidification and incubation.

Answer:

The correct answer is - B. An allele present in all members of a population.

Explanation:

A homzygous variant or allele for all the members of a particular gene is a fixed gene and is the only variant that presents in all the population for that gene.

It takes place when there is all other alleles become extinct and only one remains. The allele frequency of this allele is always 1.00 in the population which means only one allele is present on the locus.

Answer: True

Explanation: Tap water is made slightly alkaline because acidic water could corrode metal pipes. It depends on country how high pH is. In some countries, where metal pipes are widely used pH could be even 10

Answer:

Question 2: red and blue

Question 3: ultraviolet and infrared light

Answer:

B. Sneezing

Explanation:

There are two types of nervous systems namely: somatic nervous system and autonomic nervous system. The somatic nervous system is that nervous system that controls the voluntary movement of muscles while the autonomic nervous system controls involuntary actions.

According to this question, nodding ones head, petting a dog and jumping over a puddle are all examples of voluntary movements, hence, are controlled by the somatic nervous system whereas, sneezing is an involuntary action controlled by the autonomic nervous system.

Sneezing because i was sneezing a lot and yea

Answer:

253 m

Explanation:

The height in meters must the student climb in order to reach the top of the hill is 253 meters. The correct option is B.

Height is a measurement of vertical distance, or vertical extent (how “tall” something or someone is) (how “high” a point is).

Climbing is the activity of ascending a steep topographical object with one's hands, feet, or any other part of the body, which can range from the world's tallest mountains (e.g., the eight-thousanders) to little stones.

The image of a mountain is given which is climbed by a person. There are different heights of the mountain is given. The height that is a must-climb by the student to reach at the top is 253 meters.

Therefore, the correct option is B. 253 m is the height of the mountain to reach the top.

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The question is incomplete. Your most probably complete question is given below:

245 m

253 m

236 m

260 m

Answer:

the changes apparent in worldwide populations include a decrease in both overall body size and brain size as well as a reduction in jaw and tooth proportions.

Explanation:

Answer:

B or C??

Explanation:

It's not D because organism is the largest. It's not A because an organ is larger than a tissue. A Tissue is a group of cells.

B and C are the exact same

Answer:

The correct answer is - silent.

Explanation:

Silent mutation is a point mutation that takes place by a single change in a single base nucleotide of nucleic acid and it may or may not change the aminoacid sequence as the wild type protein.

This does not result in any phenotypic or functional change in the protein of the organism. It is a class of point mutation. This change can be substitution in base.

Answer:

Transverse

Explanation:

Answer: Frontal

Explanation:

both have visible nuclei.

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Answer:

Telophase 1 because of the constriction

Explanation:

The cell membrane constricts and divides the cytoplasm in half to form two cells

Explanation:

Then, about 2.5 billion years ago, oxygen started getting added to the atmosphere by photosynthetic cyanobacteria. “Oxygen is produced as a waste product of photosynthesis. ... “The production and burial of plant matter over long periods causes oxygen levels to rise,” explains Poulsen

Answer:

6) Inertia is 1 Law

7) Acceleration is 2 Law

8) Should be acceleration too, 2 Law

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Explanation:

6:

Answer: Newton's first law of motion,

Explanation: Inertia is the tendency of an object to resist a change it its motion. Describe how inertia affects motion. If an object is already at rest, inertia will keep it at rest. If the object is already moving, inertia will keep it moving.

7:

Answer: ​The second law

Explanation: ​The second law shows that if you exert the same force on two objects of different mass, you will get different accelerations (changes in motion). The effect (acceleration) on the smaller mass will be greater (more noticeable).

8.

Answer: Newton's Second Law

Explanation: The second law of motion explains the relationship between force, mass, and acceleration. The law states that the acceleration of an object depends on the mass of the object and the amount of force applied. Newton's second law of motion is also called the law of force and acceleration.

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Answer:

When antibodies attach to an antigen (think a lock–key configuration), it signals other parts of the immune system to attack and destroy the invaders. This is how the human body develops immunity (acquired) to a particular disease. But some germs and viruses are very adaptive.

Explanation:

.

false I think, but I don't know for sure

Answer:

True

am not sure but my explanation:

An oxygen atom possesses 8 protons, 8 massive, positively charged nuclear particles. There are also 8 massive, neutrally charged nuclear particles, 8 neutrons in the common isotope, 16O. And orbiting the nuclear core, there are 8 electrons, fundamental particles with negligible mass that each possess a formal negative charge.

Any atom with 8 protons is automatically an oxygen atom by defintion. 7 protons specifies a nitrogen atom; 9 protons specifies a fluorine atom. Of course, oxygen generally takes the form of the dioxygen molecule, O2. The number of protons gives Z, the atomic number, which is different for each element.

Answer:

b, a, c

Explanation:

Since recombination frequency is directly proportional to the distance between genes, the values are used to locate genes on a chromosome. Here three genes a, b and c can assume any of three linear sequences: a-b-c or a-c-b or b-a-c, which depends on the gene present in the middle. Here, recombination frequency for a and b (X) = 20%, that for a and c (Y) = 8% and for b and c (Z) =28%. As we can see that Z = X + Y or 28 = 20+8 which means that genes b and c are present at extremes and a is in the middle. Thus, the sequence of genes is b-a-c.

Answer:

The dependant variable would be the fertilizer

Explanation:

The dependant variable is what the new or tested variable is.

Answer:

A. Shape of the leaves

Explanation:

Mendel chose seven characters of the pea plant to study.

They are:

1. Flower colour

2. Flower position 

3. Stem length 

4. Pod shape 

5. Pod colour 

6. Seed shape

7. Seed colour 

Shape of leaves was not observed by Mendel.

Answer:

mediante la absorción, por la raíz

Explanation:

Answer:

Sedimentary rocks are deposited one on top of another. Therefore, the youngest layers are found at the top, and the oldest layers are found at the bottom of the sequence.

Answer:

G

Explanation:

Because this is the latest layer formed. On the other hand, you can see that A has formed its layer thousands and thousands of years ago.

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Answer:

YY

Explanation:

It's co-dominate, meaning both traits show, but don't blend (Ex: Red + White = Red With White Stripes) (Ex: Blue + Red = Red With Blue Spots)

Answer:

YY

Explanation:

It is YY because these genes do not blend together with other genes.

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Answer:

True

Explanation:

Health and justice are two main powerful systems that influence the growth of the number of forensic nurses.

What is a forensic nurse?

Forensic nurses are the registered and the advanced practice nurses which have specific training and education.They provide care to the patients that suffered from prolonged acute health consequences from brutality and abuse.

They are not separate from other medical caretakers, but they are integrated into the overall care needs of individual patients.

Healthcare professionals like forensic nurses is challenged the outcomes of the physical assaults and the violence. Victims of the brutality give the primary outcomes of violence like injury.

Forensic nurses collect the evidence and give testimony that can be used in court, so that the victim get justice and punishment is given to that one who commits the brutality.

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Answer:

thoracic vertebrae

Explanation:

I hope I'm right