Which of the following statements about the ice ages is true? a. An ice age will never come again. b. The causes of ice ages are well known. c. During the ice ages, icy glaciers covered much of the continents. d. There were no living organisms during the ice ages.

Answer: they can make their own food and fend for themselvse

Explanation:

n

Answer:

2,2,1,1,1

Explanation:

Answer: A green pigment present in all plants that absorbs light to provide energy for photosynthesis is chlorophyll.

Explanation:

Chlorophyll is a green pigment found in almost all parts of plants. it is essential in the process of photosynthesis. It absorbs light in the blue and red parts of the visible spectrum, but it reflects green light.  

However, as this pigment cannot absorb the green color spectrum, it tends to impart the green color to the plant tissues. CChlorophyll is located in plant cells called chloroplasts. These are special cells that are located in the thylakoid membrane compartments.

Green plants are green because they contain a pigment called chlorophyll. It absorbs certain wavelengths of light within the visible light spectrum. Chlorophyll absorbs red and blue light. There are two chlorophylls in plants that are critical for absorbing light:

To learn more about chlorophyll,

https://brainly.com/question/30224223

Spoilage of canned foods stored at high temperatures, accompanied by gas production, is  Thermophilic anaerobic spoilage. Correct option (a)

Thermophilic anaerobic spoiling is produced by anaerobic Thermoanaerobacter and Thermoanaerobacterium, which produce huge amounts of H2 and CO2 gases when fermenting medium-acid canned foods at high temperatures.

Yet, certain bacteria that develop in canned goods do not create gas and so do not give an odd look of the can; however, they do cause spoiling of the product. Spoilage is typically caused by the development of germs as a result of leaking or underprocessing.

Learn more about  thermophilic spoilage to visit this link

https://brainly.com/question/29999049

#SPJ4

Answer: a

Explanation:..

Gradualism and punctuated equilibrium have in common as they are both explanations of the rate of evolutionary change.

Option A is correct.

The evolution of a species can take place in two different ways: punctuated equilibrium and gradualism.

Selection and variation that occurs more gradually is referred to as "gradualism." It's hard to notice in a short amount of time. For the following reasons, organisms are chosen for small variations that are slightly more suited to their environment: Those with more of the helpful quality live to see another day, while those with less of it pass away.

Change occurs in spurts in punctuated equilibrium. There is a time when very little changes, and then one or a few big changes happen, usually through genetic mutations in a few people. Random changes in DNA that are passed on to subsequent generations rather than being inherited are known as mutations.

Learn more about gradualism:

brainly.com/question/1800122

#SPJ1

Rachel Carson's most well-known book, Silent Spring, was published in 1962. The book issued a caution against the use of pesticides created by humans, particularly DDT dichlorodiphenyltrichloroethane. During World War II, the insecticide DDT was produced in large quantities.

The 1962 publication of Rachel Carson's book Silent Spring, a marine biologist turned nature writer, ignited the global environmental movement.

In her books on the sea, Carson discussed geologic findings made possible by submarine technology and breathing underwater, including how islands were founded, how currents alter and merge, how air temp affects sea creatures, and how erosion affects not only shorelines but salinity, fish farms, and tiny microbes.

To know more about Rachel Carson visit:

https://brainly.com/question/1757714

#SPJ1

reorganize debt and keep property.

bankruptcy is a legal process involving an individual or business that is unable to pay off its debts.

The chapter 13 of the Bankruptcy Code allows for the adjustment of debts for a person with regular income and permits the debtor to maintain their property while paying off their debts gradually over a period of time, often three to five years.

A petition is filed, either on behalf of the debtor, which is more often, or on behalf of creditors, which is less frequent, to start the bankruptcy process.

Therefore, reorganize debt and keep property.

To learn more about Bankruptcy, refer to the link:

https://brainly.com/question/15277574

#SPJ1

Mitochondria and the g plasma membrane are seen here.The response to the question is thus as follows.The cell wall, nucleus, vacuoles, mitochondria, endoplasmic reticulum, Golgi apparatus, and ribosomes are all clearly visible in this transmission electron micrograph.

To learn more about electron micrograph refer

https://brainly.com/question/26906286

#SPJ1

Solids have the lowest kinetic energy so vibrate very little, Liquids have more kinetic energy so particles slide past each other while Gases have the most kinetic energy so fly around in the air.

Matter is anything that takes up space and can be weighed. Matter has volume and mass.

Therefore matter is something that takes up space and has a mass. The three states of matter are solid, liquid and gaseous. Physical transition includes the conversion of a material from one state of matter to another without changing it's chemical composition.

Learn more about matter here: brainly.com/question/3998772

#SPJ1

The monomers that combine to form portion of haemoglobin in red blood cells are called the two alpha monomers and the two beta monomers.

Haemoglobin is defined as the protein part of the red blood cells that helps in the transport of oxygen and removal of carbondioxide from the cells.

The major components of the haemoglobin include the following:

The protein aspect.of the haemoglobin is then made up of the monomers that combine to form portion of haemoglobin in red blood cells are called the two alpha monomers and the two beta monomers.

Learn more about red blood cells here:

https://brainly.com/question/24939518

#SPJ1

You have to weigh 8.4 g of nutrient agar to make a solution of 3% nutrient agar in 100 ml solution.

Nutrient agar weighs 28 g of powder in 1000ml, so it will weigh 2.8 g in 100ml which is 1% of the solution, so 2.8 x 3 = 8.4 g of powder to weigh for making the solution, for sterilizing provide a temperature of 121°C for 15 minutes.

The nutrient agar is used to grow the bacterial population by providing the nutrient which is essential for the bacterial population to grow.

Therefore, weigh 8.4 g of nutrient agar to make a solution of 3% nutrient agar in 100 ml solution.

Learn more about nutrient agar, here:  

https://brainly.com/question/5492273

#SPJ1  

Answer:

When chocolate melts, the molecules in the chocolate gain more freedom of movement. To correctly show this change in a model, you can add a layer of movement to the molecules, such as showing them vibrating or rotating. You can also show the molecules breaking apart and reforming into different shapes, as they gain more freedom of movement.

Explanation:

Option C is correct. Cooling the sample to about 10 degrees Celsius to deactivate the DNA polymerase is not one of the steps of a PCR cycle.

The Polymerase Chain Reaction (PCR) involves choosing a portion of the genome to be amplified utilizing short synthetic Fragments of DNA called primers, and amplifying that segment using several rounds of DNA synthesis.

There is three easy phases of every DNA synthesis reaction

(1) denaturing the template into single strands;

(2) annealing primers to each template DNA strand for new strand synthesis; and

(3) extending the new DNA strands from the primers.

In PCR, DNA is heated to a temperature of 94–98°C to denature it into single strands.

Then cooled to a temperature of 50–64°C to allow primer binding.

And finally raised to a temperature of 72–80°C to enable the polymerase to synthesis the complementary strand to produce double-stranded DNA.

To know more about PCR here:

https://brainly.com/question/19670710#

#SPJ4

The CDC would not experiment with the virus and make a vaccine because of the risk of infection as well as mutation of the virus to a more deadly form.

A vaccine is a biological treatment that offers active acquired immunity against a specific infectious or cancerous disease. Numerous studies and analyses have been done to confirm the efficacy and safety of vaccines.

Vaccines can be made from weakened pathogenic organisms or parts of the pathogenic organism which are then introduced into the body to elicit an immune response.

However, some viruses are so contagious that it is risky to experiment with them in order to produce vaccines from the weakened organism or parts of the organism.

Learn more about vaccines at: https://brainly.com/question/625596

##SPJ1

The activity of the human heart between the start of one heartbeat and the start of the next is known as the cardiac cycle. The phase from first to last (from left to right) are given in figure.

The process by which deoxygenated blood in the lungs is changed to oxygenated blood, and then the heart pumps that blood through the aorta to the rest of the body, is known as a cardiac cycle.

It consists of two phases: the diastole, which comes after the systole—a period of strong contraction and blood pumping—during which the heart muscle relaxes and replenishes.

The four phases of ventricular activity are rapid ventricular ejection, rapid ventricular filling, isovolumic contraction, and isovolumic relaxation.

The heart cycle has four main phacycleses: (1) "Isovolumic relaxation," (2) "Inflow," (3) "Isovolumic contraction," and (4) "Ejection."

For more information on cardiac cycle kindly visit to

https://brainly.com/question/14797546

#SPJ4

Brainly.com is one of the sites that can help study diagrams of things like the cell cycle and cell organelle recognition.

The cell cycle, or also known as the cell-division cycle, is the series of events that take place in a cell that cause it to divide into two daughter cells.

Websites such as Wikipedia will also help you to facilitate your study of diagrams of things like the cell cycle and cell organelle recognition.

The cell cycle is a four-stage process in which the cell increases in size (gap 1, or G1, stage), copies its DNA (synthesis, or S, stage), prepares to divide (gap 2, or G2, stage), and divides (mitosis, or M, stage).

Learn more about cell cycle at: https://brainly.com/question/5034994

#SPJ1

The tundra also takes a long time to recover from physical disruptions such as tyre tracks from big vehicles.

what is a climate change ?

Climate change, as it is often used, refers to global warming—the continual rise in global average temperature—and its consequences on the Earth's climate system. In a larger sense, climate change encompasses prior long-term changes to the Earth's climate. The current rise in global average temperature is faster than previous changes, and it is primarily the result of humans burning fossil fuels. The use of fossil fuels, deforestation, and some agricultural and industrial practises all contribute to the increase of greenhouse gases, particularly carbon dioxide and methane.

The tundra also takes a long time to recover from physical disruptions such as tyre tracks from big vehicles. Changes in the Climate A warming temperature might significantly alter tundra landscapes.

To learn more about tundra follow the given link: https://brainly.com/question/4125133

#SPJ1

The anthers of the flower are most likely impacted by this fungus.

What is a fungus?

Fungus is a type of organism that is neither a plant nor an animal. It is a member of a group of organisms called eukaryotes, which includes all living things except bacteria and viruses. Fungi are made up of microscopic cells organized into long, branching structures called hyphae. Fungi are extremely diverse and can be found in all types of habitats, from soils and plants to animals, including humans. Fungi play important roles in the ecosystem, breaking down dead organic matter, cycling nutrients, and providing food for other organisms.

The anthers are the organs responsible for producing and releasing pollen, so if they are replaced with powdery, dark colored spores, the flower will be unable to produce viable pollen.

To know more about fungus,

https://brainly.com/question/17161754

#SPJ1

Johann Friedrich Miescher, a Swiss chemist, made the initial discovery of the DNA molecule in the 1860s.

As a crucial aspect of our body's immune system, white blood cells, Johann set out to investigate their essential components. These cells primarily came from bandages covered in pus that were gathered from a neighboring clinic.

This unknown chemical was given the name "nuclein" by Johann. Unbeknownst to him, Johann had found DNA, the fundamental building block of all life.

Johann conducted research utilizing salt solutions to learn more about the composition of white blood cells. When he introduced acid to a cell solution, he observed that something detached from the solution.

Therefore, Johann Friedrich Miescher, a Swiss chemist, made the initial discovery of the DNA molecule in the 1860s.

To learn more about DNA, refer to the link:

https://brainly.com/question/264225

#SPJ1

Answer:

stage 3

Explanation:

Equipment:

   The set of articles or physical resources serving to equip a person or thing: such as. (1) : the implements used in an operation or activity : apparatus. sports equipment.

Types and Examples:

Equipment is a general time with a broader definition compared to tools and equipment. It refers to a set of tools needed to perform a specific task. People often use the word equipment as the plural form of tool. In this case, a collection of tools will be called equipment

To learn more about equipment refers to:

  https://brainly.com/question/3023165

   #SPJ1

Answer:

1

Explanation:

use the chart with the condons being translated to amino acids

The correct match of each statement with its term is as follows:

Eukaryotes are any of the single-celled or multicellular organisms of the taxonomic domain Eukaryota, whose cells contain at least one distinct nucleus.

On the other hand, prokaryotes are organisms whose cell (or cells) are characterized by the absence of a nucleus or any other membrane-bound organelles.

Eukaryotes and prokaryotes both contain cell membranes and ribosomes. However, only eukaryotes contains linear chromosomes compared to the circular chromosomes in their counterpart, lysosomes in their cells etc.

Archaeans are prokaryotic organisms similar to bacteria but are more adapted to extreme conditions.

Learn more about prokaryotes and eukaryotes at: https://brainly.com/question/23564355

#SPJ1

Answer:

Prokaryotes contain circular DNA in addition to smaller, transferable DNA plasmids. Eukaryotic cells contain mitochondrial DNA in addition to nuclear DNA. Eukaryotes separate replicated chromosomes by mitosis, using cytoskeletal proteins, whereas prokaryotes divide more simply via binary fission

Answer:

A major difference between eukaryotes and prokaryotes is the presence of mitochondria DNA (mtDNA) in eukaryotes .

A plant cell's chloroplast is where photosynthesis takes place.The sun's light energy is converted throughout this procedure into chemical energy that is then stored in food.

"Green plants & a few other species prepare their food through a process called photosynthesis, which involves the utilization of water, carbon dioxide, and sunshine."Plants, algae, and some microorganisms employ the photosynthesis process to transform chemical energy into light energy.

The four stages of photosynthesis include light absorption, electron transfer, ATP production, and carbon fixation.The equation for the photosynthetic process is 6CO2 + 6H2O C6H12O6 + 6O2.

To know more about photosynthesis visit:

https://brainly.com/question/29764662

#SPJ1

Answer:

In Washington Irving's "Rip Van Winkle," the setting of the story takes place in the remote and picturesque Kaatskill Mountains, which serves as the perfect backdrop for the mythic and supernatural elements of the story. (page 2)

The main character, Rip Van Winkle, is a remarkable, strange and exaggerated figure; he is a lazy and careless man who spends his days avoiding work and spending time in the mountains. He is also blessed with the ability to sleep for 20 years, which is a exaggerated characteristic. (page 3)

Explanation:

In the observation, there is a 50% chance for each child to inherit the trait,  (X/x) that is autosomal and inherited by the dominant allele.

Autosomal dominant inheritance is the way of passing genetic traits from parents to children.

The cross between  Xx and xx.

Creating offspring with having 50% probability of having this character.

While the father xx lacks the feature, the mother XX does.

The cross is attached in the image below.

There are only two genotypes, Xx and xx, which occur equally frequently.

Therefore, the children have a 50% chance of inheriting the characteristic.

Learn more about the autosomal dominant, here:

https://brainly.com/question/14594146

#SPJ1

Barium is a good heat and electrical conductor. Potassium is very reactive and malleable. possesses characteristics of both nonmetals and metals. Boron , Neon is a non-reactive gas.

A person who is malleable is adaptable, inclined to accept other people's opinions, and lacks the self-assurance to stand up for his or her own beliefs. Being flexible is more a virtue than a flaw.

When a substance is hammered nor rolled under tension, it can form thin sheets, which is referred to as being malleable. Examples such malleable metals include lead, copper, silver, aluminum, gold, and iron.

To know more about Malleable visit:

brainly.com/question/21234770?

#SPJ1

Answer:

Functionally, the nervous system is organised hierarchically; this is analogous to a business corporation with workers and managers. The hierarchy consists of effectors (sensory and motor) and different levels of information processing and integration in the spinal cord, brainstem and forebrain.

Explanation:

The structures of the nervous system are organized in a hierarchy: the brain, spinal cord, and peripheral nervous system, where the brain is at the top, regulating most all functions of the body.

The hierarchy is important in all aspects, including the nervous system, as it allows a division of labor that increases the efficiency of doing the task and works together to coordinate the body, the highest level of the hierarchy is the brain, which regulates most of the functions. The spinal cord carries out the reflex actions, and they both regulate the body.

Hence, the structures of the nervous system are organized in a hierarchy: the brain, spinal cord, and peripheral nervous system, where the brain is at the top, regulating most all functions of the body.

Learn more about the nervous system hierarchy here.

https://brainly.com/question/29355295

#SPJ2

Bacteria and viruses can only survive on a dry surface for about two hours is false.

The survival time of bacteria and viruses on a dry surface can vary widely depending on the type of microbe, the conditions of the surface, and the environment.

Some bacteria and viruses can survive for extended periods on dry surfaces, while others may die off quickly.

For example, non-enveloped viruses such as norovirus and adenovirus can survive for several days on dry surfaces, while enveloped viruses such as influenza and rhinovirus can survive for only a few hours on dry surfaces.

Bacteria such as Staphylococcus aureus can survive for several days on dry surfaces, while others such as Escherichia coli may only survive for a few hours.

It's important to note that some microorganisms are more resistant to survive in dry conditions than others, and the survival time can also vary based on the environmental conditions.

Learn more about bacteria at

https://brainly.com/question/27574047

#SPJ4