Can anyone please help me on this please I beg you

Complete question:

When the person from number one was creating true-breeding lines of plants for certain traits, what method was used?

A. Self pollination over and over again while discarding plants with unwanted traits

B. Cross-pollination over and over while discarding plans with unwanted traits

C. Allowing for cross-pollination by bees

D. Not allowing the plants to pollinate at all

Answer:

A. Self pollination over and over again while discarding plants with unwanted traits

Explanation:

Due to technical problems, you will find the complete explanation in the attached files.

Answer:

1. 260

2.

3. drought

4. babies born

6. carrying capacity

7. population density

8. logistic growth

9. exponential curve

Explanation:

An object's color is really determined by the light wavelengths that are reflected while all other wavelengths are absorbed.

In this context, color refers to the various light wavelengths in the visible light spectrum that are seen by human eyes.

An item is viewed as black if it absorbs all the hues of white light, as demonstrated in the following illustration. A white item will evenly reflect all shades of white light.

The light waves that an item reflects determine its "color." This is governed by the configuration of electrons in the atoms of that substance, which, in accordance with complex quantum principles, will absorb and reemit photons of a certain energy.

Therefore, an object that humans see is actually the wavelengths of light reflected off the object.

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Answer:

I believe it interacts with the lymphatic system (because it creates lymphocytes) and the circulatory system (because it creates red blood cells).

Answer:

Any and all major organs are affected by sickle cell disease. The liver, heart, kidneys, gallbladder, eyes, bones, and joints can suffer damage from the abnormal function of the sickle cells and their inability to flow through the small blood vessels correctly.

Explanation:

Answer:

The main body system affected by sickle cell anemia is the Circulatory system.

Explanation:

According to John Hopkins Medicine (a reliable source), "Any and all major organs are affected by sickle cell disease. The liver, heart, kidneys, gallbladder, eyes, bones, and joints can suffer damage from the abnormal function of the sickle cells and their inability to flow through the small blood vessels correctly."

Answer:

hand lens is used to make small object to appear larger hence visibility is easily attained

Answer:

"Organic molecules have carbon atoms. Lithium Fluoride (LiF), water (H2O), and sulfer dioxide (SO2) have no carbon atoms

C3H8 (propane), because it has 3 carbon atoms'

Explanation:

Answer:

Herbaceous plants are plants that have non-woody stems. (Like annuals and biennials).

Answer:

rock cycle

Explanation:

Answer:

Thermometer with rhotomer

Explanation:

Answer:

The correct answer is - due to unicellular structure and some characteristics similar to both plants and animals.

Explanation:

Euglena is classified as the protoctists and they perform photosynthesis with the same basic process that plants use but they are able to move around and eat like animals too.

They are not classified as plants or animals as they are unicellular which means they are composed of only one cell, In order to be classified as a plant or animal, an organism has made of more than one cell.

Due to its unicellular body and characteristics similar to both plants and animals they are called protists.

Answer:

During mitosis, a eukaryotic cell undergoes a carefully coordinated nuclear division that results in the formation of two genetically identical daughter cells. Then, at a critical point during interphase (called the S phase), the cell duplicates its chromosomes and ensures its systems are ready for cell division.

Explanation:

One of the biomolecules for which nitrogen is needed and that build muscles are the proteins, and the nitrogen is also found in the DNA and RNA that are present in the cells.

Proteins play many important roles in the body, including building and repairing tissues, and nitrogen is a critical component of proteins, as it is incorporated into the molecule as a part of the amino acids. Without nitrogen, proteins would not be able to form and perform their many important functions so a diet that is rich in protein is important for athletes and bodybuilders to build and repair muscle tissue.

As a result, of the biomolecules for which nitrogen is needed and that build muscles are the proteins, and the nitrogen is also found in the DNA and RNA that are present in the cells.

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Answer:

Tundra

Explanation:A tundra is mostly Antarctica or the Arctic or mostly an area that's covered with loads of ice and snow.Arctic tundra is a very cold, windy, and treeless biome that's snow-covered for much of the year.

Answer: The principle of original horizontality provides the basis for the law of superposition.

Explanation:

The law of superposition in geology suggests that the rocks or sediments which are newly formed due to erosion and sedimentation of the original rocks lie above the old material. This law is supported by the principle of original horizontality according to which the newly formed sediments suspend horizontally in the layers of rocks and sediments under the effect of gravity. Thus an horizontal strata distinguishes the old and the new material.

Answer:

c

Explanation:

I took the quiz and got it right

Answer:

13 protons

Explanation:

Aluminum, which has a symbol of Al, is an element in group 3 of the periodic table. It has a mass number of 27. Since the number of electrons and protons in a neutral atom are the same, a neutral/uncharged atom of aluminum contains 13 electrons, 13 protons and 14 neutrons. Note: Mass number = no. of protons + no. of electrons.

However, according to this question, an ion of aluminum has a charge of 3+, this means that an atom of aluminum has lost 3 electrons i.e. 13 electrons - 3 electrons = 10 electrons. Hence, aluminum atom with charge +3 will have 10 electrons. This doesn't change the fact that aluminum atom in a neutral state possesses 13 protons.

Answer:

The average speed of train is 133.33km/hr.

Explanation:

We know that

Average speed=    [tex]\frac{Total distance}{Total time}[/tex]

So,

average sped of the train =  [tex]\frac{800 Km}{6 hr}[/tex]

                                          = 133.33km/hr.

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Answer:

Yes they do

Explanation:

Animals and plants make up a ecosystem because the animals feed off the plants and the animals feed off of other animals.

Answer:

All living things in ecosystems are part of a food chain. A food chain is how energy is passed between things. farms are ecosystems. Farmers work with crops, animals, soils, and the weather to grow our food.

Explanation:

Answer:

B.chloroplast

Explanation:

chloroplast is gained from the sun through the cytoplasm organelle

Answer:

It would be A - Maple trees.

This is because Caterpillars, Cows, and Horses are all primary consumers as they all eat things. Also, primary consumers are herbivories, and carnivores are secondary consumers.

Explanation:

- Eijiro <3

Answer:adreninal rushes after doing workouts

Explanation:

Explanation:

it can mean that your are running or moving around or that you are having adrenaline rush or just did cocain or so other drug

Answer:

Different messenger RNAs (mRNAs) would have been produced

Explanation:

Sigma factors are protein subunits that form bacterial RNA polymerases and they are responsible to initiate RNA synthesis. The number of sigma factors is variable between different bacterial species. For example, Escherichia coli contains seven sigma factors, while Bacillus subtilis has at least 17 sigma factors, which control the transcription of different genes. These factors determine the specificity of the RNA polymerase to the target gene promoter regions and then control transcription initiation.

Answer:

D

Explanation:

Brainliest?

Answer:

Valine

Explanation:

This question is describing the process of translation, which is the second stage of protein synthesis. Translation is the process whereby mRNA sequence is used as a template to produce an amino acid sequence or protein.

The mRNA sequence is read in a group of three nucleotides called CODON. Each codon specifies an amino acid. According to this question, using the genetic code provided for us in a tabular form in this question, a mRNA codon as follows: GUA will code for VALINE amino acid.

Answer:

Africa needs to urgently put a number of additional measures in place to speed up these advances, and to move towards eliminating the disease. These include accelerated investment and deployment of vaccines, new diagnostic tools, new funding strategies for malaria control and keeping in check the drug and insecticide resistance challenge.

Explanation: