What is the theory which explains how
mammals wound up living in the oceans?
A. They migrated gradually from land.
B. They evolved from fish.
C. Aquatic dinosaurs became present day whales.

Answer:

i think it is 3 wildlife corridors but i am not sure

Answer:

What in the world is this...

Answer: ❤️❤️❤️❤️❤️❤️❤️❤️

Explanation: yeah i need points thx a lot g

Answer:

D

Explanation:

The moon moves to the East each day (about 15⁰) in its orbit around the Earth, which takes a total of 27.3 days. The moons orbit around Earth is a complete circle, which is 360⁰. It takes approximately 1 hour each day for the Earth to catch up to the moon, delaying it's rising by 1 hour.

Answer:

B. Visible Light

Explanation:

The best wavelengths for photosynthesis fall within the blue range (425-450 nm) and red range (600-700 nm).

Answer:

False

Explanation:

The number of vertebrate species are more...

Answer: Because, the higher biodiversity in an ecosystem means that there is a greater variety of genes and species in that ecosystem, and stability. It makes an ecosystem more sustainable because of the food web being stronger and the organisms providing a wide variety of functions.

I hope I answered you correctly and that it helps, I'm sorry if its wrong. Good Luck!

Explanation:

Answer:

b. A second marker in the knock-out cassette, that if inserted into the genome results in cell death when plated on selective media.

Explanation:

General recombination, also known as homologous recombination, refers to the naturally occurring process of exchange of genetic material between pairs of homologous DNA sequences. This process (homologous recombination) can be exploited by genetic engineering to insert DNA segments of interest at target genes. Moreover, a cassette is a mobile DNA segment containing almost a gene and a recombination site, which is integrated into the locus/loci of interest by homologous recombination. A cassette may contain a DNA segment called 'negative marker' which prevents growth under particular conditions, while a positive marker permits growth under certain conditions. In consequence, a second marker consisting of a drug cassette may be used as a negative marker in order to evidence its insertion by inducing cell death when they are plated in selective conditions.

Answer: Photosynthesis is the critical process for life to exist.

Explanation:

The main idea is on the first line.

You can see all the information afterwards are leading to the explanation of the process of photosynthesis.

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Answer:

7-d

8-b

9-?

10-b

11-c

12-?

13-b

Explanation:

Answer:

The illustration shows a model of the active transport of solute particles from outside the cell to inside the cell.

Explanation:

Active Transport is defined as a process involving the movement of molecules from a region of lower concentration to a region of higher concentration against a gradient or an obstacle with the use of external energy.

This process is “active” because it requires the use of energy (usually in the form of ATP). It is the opposite of passive transport.

An example is the phagocytosis of bacteria by Macrophages.

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Answer:

ERECTION

Explanation:

An example of a squirrel population would be a group of Eastern Gray Squirrels (Sciurus carolinensis) living in a city park.

An example of a squirrel population would be a group of Eastern Gray Squirrels (Sciurus carolinensis) living in a city park. Scientists may study the population dynamics and ecology of this group of squirrels by conducting surveys and capturing and marking individual squirrels to track them over time. This can provide information on their survival rates, reproduction, and movements, which can be used to estimate the size and growth rate of the population, as well as identify any factors that may be impacting the population, such as disease, predation, or habitat loss.

Additionally, scientists may also conduct transects, or study the population density, distribution of the squirrels in a specific area and the food resources that are available to them, as well as monitor the environmental factors that might affect the population growth.

Another example could be a population of Fox Squirrels (Sciurus niger) living in a rural forest. Here, researchers may study the impacts of logging and fragmentation on their population dynamics and genetic diversity, and understand how these animals are utilizing different food resources throughout the year.

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an adjective describing the species

Answer: c. the same for other members of the same species

Explanation: Just trust me.

Answer:

B) Production of complex molecules from simpler ones.

Explanation:

Synthesis is the process of combining simpler molecules to form more complex ones. This can occur through various chemical reactions within an organism. The other choices do not accurately describe the process of synthesis.

A) Distribution of essential compounds throughout an organism - This refers to the transport of essential molecules within an organism, rather than the production of complex molecules from simpler ones.

C) Elimination of waste products from the organism - This refers to the removal of waste products, rather than the production of complex molecules.

D) Regulation of physiological activities - This refers to the control of physiological processes, rather than the production of complex molecules.

Answer:

We define seven hallmarks of cancer: selective growth and proliferative advantage, altered stress response favoring overall survival, vascularization, invasion and metastasis, metabolic rewiring, an abetting microenvironment, and immune modulation, while highlighting some considerations for the future of the field.

Answer: the answer is D a theory

Explanation: Because it has strong evidence backing the claims it makes

9 of the offsprings will be dominant for both traits in the above dihybrid cross.

A dihybrid cross is a cross between two individuals with two observed traits that are controlled by two distinct genes.

Gregor Johann Mendel known as the father of genetics was the first person to discover the basic principles of heredity during the mid-19th century.

In a dihybrid cross between two parents that are heterozygous for both traits, the cross will result in four different combinations of seeds in the F2 generation as follows:

These offsprings are in the phenotypic ratio of 9:3:3:1 where 9 represents the offsprings dominant for both traits.

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Answer:the answer is a

Explanation: I just answered it

Smaller cells with a high surface area to volume ratio have the best transfer rates, hence option A is correct.

All cells have a cell membrane, also known as a plasma membrane, which separates the interior of the cell from the external environment. A semipermeable lipid bilayer makes up the cell membrane.

The movement of materials into and out of the cell is controlled by the cell membrane.

A small volume is better in terms of efficiency of transporting molecules throughout the cell, but a large surface area is better for transporting molecules across the cell membrane.

A surface area to volume ratio regulates cell size because as cells become larger, they have less surface area relative to their size.

Therefore, smaller cells with a high surface area to volume ratio have the best transfer rates, hence option A is correct.

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Answer:

the yellow Seed is dominated to the green seats

Explanation:

the heterozygous yellow Seeded plant will have the genotype you and the green seeded plant with have yy if this to plants are crossed the

result of F1 generation will be two yy ( yellow seeds )

and two yy( green seeds) the probability of the Offspring will be 50:50

Answer:

the yellow Seed is dominated to the green seats

Explanation:

Answer:

ozone is a pale blue gas which is made up of three oxygen atoms.

hole in ozone layer affect humans

bcoz harmful uv rays are entered through the hole which is dangerous to human's skin and health.

cfc are found in industries.

the trapping of the sun's warmth in a planet's lower atmosphere, due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface is called green house effect

the main gases responsible for the greenhouse effect are greenhouse gases. they are important bescause Greenhouse gases keep our planet livable by holding onto some of Earth's heat energy so that it doesn't all escape into space.

effects of global warming:

1) climate change

2) melting of glacier

3) acid rain

climate change refers to the variation of the earths global or regional climate over a long period of time because of changes in environment

desertification is the process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture.

Answer:



Explanation:

Answer:generalize

Explanation:

After classical conditioning has occurred, if the conditioned stimulus is repeatedly presented alone, without the unconditioned stimulus, the conditioned response will WEAKEN.

In conclusion, after classical conditioning has occurred, if the conditioned stimulus is repeatedly presented alone, without the unconditioned stimulus, the conditioned response will WEAKEN.

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Answer:

In the past two decades, this species has experienced severe population decline due to the emergence of devil facial tumor disease (DFTD), a transmissible cancer. During these 20 years, scientists have puzzled over the immunological and evolutionary responses by the Tasmanian devil to this transmissible cancer

Answer:

Through the process of cellular respiration

Explanation:

hope it helps  

stay safe love u

btw can i get brainliest

Answer:

C

Explanation:

Answer:

Neurons are electrically excitable cells that transmit information throughout the nervous system. They are the basic building blocks of the nervous system and perform a variety of functions, including receiving and sending signals, processing information, and controlling movement.

The nervous system is responsible for coordinating the body's activities and responding to its environment. without neurons, the nervous system would not be able to function properly. Neurons are essential for survival and play a vital role in our health and well-being.

Answer:

My organism is called the Red Panda (Ailurus fulgens). It is a mammal native to the eastern Himalayas and southwestern China. The Red Panda is the only living species of its genus, Ailurus, and is closely related to the Giant Panda, although it has a much more specialized diet. It is an excellent climber and has a thick, woolly coat to help keep it warm in its cold mountain habitat.

The Red Panda has evolved over time to become more specialized in its diet and habitat. Its thick fur helps to keep it warm in the cold mountain environment, while its long, bushy tail helps it balance while climbing trees. Its diet consists mainly of bamboo, but it also eats fruits, eggs, and small animals. Its sharp claws and teeth help it to break open bamboo stalks and to defend itself against predators.

Explanation:

Answer:

Antibodies have three main functions: 1) Antibodies are secreted into the blood and mucosa, where they bind to and inactivate foreign substances such as pathogens and toxins (neutralization). 2) Antibodies activate the complement system to destroy bacterial cells by lysis (punching holes in the cell wall).