Which of the following statements best explains why the energy pyramid is narrowest at the top?

A The organisms at the top of the pyramid have the largest population sizes
B The organisms at the top of the pyramid receive only a small fraction of the energy that originally enters the system,
The organisms at the top of the pyramid are the most efficient feeders.
The organisms at the top of the pyramid need only a small amount of energy for their metabolism

well, i think the first one is false because plants dont produce sexually

the second one is false

third- please fact check me ut i think its true

forth is true

true

true

true

true

true

please fact check me i grow plants but im not a scientist lol

Answer:

action potentials

Explanation:

other possible answers:

electrical impulses

muscular contractions

action potentials is likely your best bet though

Explanation:

Neurons carry messages from the brain via the spinal cord. These messages are carried to the muscles which tell the muscle fibre to contract, which makes the muscles move.

Answer:

Microbiologists study microbes, or microorganisms. They investigate some of the simplest and oldest forms of life on Earth, such as bacteria. Studying these organisms can help scientists trace the evolutionary lineage of more complex organisms. Microbiologists' research is important in developing treatments for infectious diseases that bacteria and other microorganisms cause.

Explanation:

same answer in Edmentum just change up the words

Answer:

a) Teeth arose from the rough scales of ancestral sharks.

b) Skeletal developments leading to the amphibian movement onto land probably evolved from lobe-finned fishes.

d) The anterior gill arch formed the basis for the evolution of the vertebrate jaw.

Explanation:

The animals we know today have physical characteristics that are evolutionary adaptations of characteristics of their ancestors, which have undergone a series of evolutions and modifications over the years giving rise to new species that have resulted in the species we know today. This process of evolutions and adaptations also happened with the ancestral species of fish, which allowed that today, they had characteristics such as teeth and jaws. Many of these evolutions occurred even in different species, such as the evolution that allowed the amphibians to have a skeleton, which evolved from the spine fins of fish.

Answer:

can I get a hoyaah because Apple is good for you and others around you

Answer:

industrial i think im not sure might wanna check first

Explanation:

mrk me brainliest plz

Answer:

15

Explanation:

Divide by 10%

1500

to

150

to

15

Answer:

An egg mostly has 3 parts being the Shell, the Egg white and the Yolk.

This is almost like the animal cell which has three main parts being the Cell wall, the Cytoplasm and the Nucleus.

Similarities that enable the egg to be a model of animal cell:

When an egg is left in vinegar for three days, osmosis will occur and the egg shell will probably dissolve. This means that because vinegar has a higher concentration of water than the egg, water molecules will move from the vinegar to the egg across the egg shell leading to the egg increasing in size.

As the egg shell absorbs more vinegar, it will end up dissolving.

Answer:

I am working on the same thing for school

Answer:

To maintain equilibrium.

Explanation:

The essence of recognizing the different species of organism is very important in our country because we can avoid certain activities that leads to the extinction of that species. Recognizing the nature of a specie is necessary in order to provide good and suitable environmental conditions to the organisms and avoid those activities due to which its growth is negatively affected and leads to removal of that specie from ecosystem so that's we can say that the essence of recognizing the different species of organism is very important to maintain equilibrium in the ecosystem.

Answer:

The texture of a rock refers to the size, shape and arrangement of the mineral grains in the rock that give the rock its overall appearance. The most important, but not only, a factor that controls the grain size of a rock is its cooling history.

Answer:

its multiple

Explanation:

smoothness with glass like features

Answer:

A. Egestion

Explanation:

Egestion is the removal of undigested food from body.

Answer:

We are still using things that emit Co2. Fossil fuels, natural gas, etc.

Explanation:

It forms from dead plants

It fertilizes soil

It contains carbon

It is only found in topsoil (not sure abt this tho)

Humus forms from dead plants, fertilizes soil, contains carbon, and is only found in topsoil. The correct options are A, C, D, and E.

When plant and animal debris decomposes in the soil, humus, a black, organic substance, is created.

Plants scatter leaves, twigs, and other debris to the ground, which accumulates. Leaf litter is the name of this substance. Animal carcasses contribute to the litter after they pass away.

Humus is a form of soil produced by decomposing organisms and plants.

The name was developed by a French soil expert named Muller and is based on the Latin word "soil". Humus is challenging to define and is still not completely understood.

Only found in topsoil, humus is a material that develops from dead plants, fertilizes the soil, and contains carbon.

Thus, the correct options are A, C, D, and E.

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Answer:

Codominance involves A.) multiple alleles

Answer:

A.) multiple alleles

Explanation:

.

Answer:

Explanation:

There are three major branches of biology – botany, zoology and microbiology. Botany is the branch of biology which deals with the study of different aspects of plants.

Answer:

Both parents are heterozygous. The father has a dominant black allele and a recessive brown allele. The mother has a dominant white allele and a recessive brown allele. The black allele from the father and the white allele from the mother creates co-dominance, so the puppy will be black with white spots. The brown allele from the father and the brown allele from the mother creates a brown puppy. If white OR black allele combined with a brown allele, the dominant allele will be expressed, rather then the brown recessive allele.

Explanation:

Answer:  claims are not valid

Explanation:  Astrology suggests position of stars and planets in time of birth of a human being affects one´s life. That has not any kind of scientific evidence

Answer:

They are based on unscientific methods.

Explanation:

Took the quiz.

cytokinesis is when the cell divides

telophase is when it coppies itself befor it splits

i hope that maybe helped a small bit atleast

Answer:

yellow Read the paragraph.

Jess and her family are moving to a new city. Jess has never lived anywhere else in her life and wonders what the change will be like. She will miss her friends and the familiar sights. However, Jess has always liked trying new things. Her parents said there is a park right next to their new home and a yard big enough for a dog. Jess is interested in her family’s new adventure.

Which phrase best replaces interested in to show how Jess is feeling in this situation?

excited about

uncomfortable with

nervous for

surprised by

Explanation:

The best part of scientific investigation that best defines the action where a student conducts an experiment on the effects of temperature on seed growth and draws a picture of the seeds on day 10 and writes that the seeds left in the warmest location have had the largest growth is observation. The correct option is A.

A scientific investigation is an effort to find explanations for observed phenomena. In general, the scientific investigation follows a step-by-step procedure that identifies a problem to be resolved, collects relevant information, formulates a hypothesis, tests the hypothesis by experimentation, analyzes the information collected, and makes conclusions.

The primary goal of scientific research is to extend the knowledge base of a field of study. The best part of scientific investigation that best defines the action where a student conducts an experiment on the effects of temperature on seed growth and draws a picture of the seeds on day 10 and writes that the seeds left in the warmest location have had the largest growth is observation.

Observation is a collection of data by examining something or someone. It involves looking for particular information or signs of activity, recording the data obtained in a systematic manner, and utilizing the data to draw conclusions or create predictions.

Therefore, the correct option is A.

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Answer:

none of these systems uses positive feedback

Explanation:

In a positive feedback loop, feedback serves to intensify a response until an endpoint is reached. Examples of processes controlled by positive feedback in the human body include blood clotting and childbirth

Answer:

Explanation: erosion

Answer:

Explanation:

The DNA structure can be thought of like a twisted ladder. This structure is described as a double-helix, as illustrated in the figure above. ... The sugar and phosphate groups link the nucleotides together to form each strand of DNA. Adenine (A), Thymine (T), Guanine (G) and Cytosine (C) are four types of nitrogen bases.

Answer:

The difference between the given two topics is provided below throughout the explanation section.

Explanation:

Components:

Goals:

Answer:

D. T-helper stimulate only humoral response. Cell mediated is by B cells.

Answer:

B. Offering advice about how best to perform a standard procedure.

Explanation:

Helping others can be in different ways, be it helping out or by giving encouraging words or advice. But in all aspects of help, there is always a positive outcome if help is given in the right way and at the right time. And it is also how one person lifts another.

A scientist can help a colleague out by offering advice and telling the person how to best perform a standard procedure. This will help the colleague do better in the experiment and also help ensure that the right things are done and the efforts are successful. The other options are all negative in their 'approach' which will only hinder the colleague in his/her works.

Thus, the correct answer is option B.

Answer:Offering advice about how best to perform a standard procedure.

Answer:

Due to difference in concentration.

Explanation:

The concentration of Urea in blood is higher as compared to concentration of urea in dialysis so the urea from the blood moves from the blood towards dialysis due to concentration gradient. The dialysis fluid contains no concentration of urea, so all of the urea diffuses from the blood into the dialysis fluid due to the high concentration in the blood to the lower concentration in the dialysis fluid. So we can say that diffusion of urea occur due to concentration gradient.

Answer:

mutations and undiscovered locations

Answer:

Because there were multiple gene mutations and adaptations to new habitats.