Help me? This is so hard

Answer:

Other organisms were another factor. What kinds of changes in other populations of organisms could be affecting the moths?

Explanation:

umm.

Answer:

The dog breeder to check for all the details that meets her requirement of dogs.

Explanation:

A dog breeding is the practice of mating dogs. In the context, it is given that a dog breeder wants to purchase a male dog of three year old for her business and she founds an advertisement on the net about a purebred males that costs $700. Now before buying this purebred male dog, the dog breeder should first of all check whether the seller who is selling online is a licence breeder or not.

The dog breeder should also check whether the dog is a purebred or not and should also find out the actual age of the dog. The health of the dog should be checked by an professional vet before buying the dog.

The selling of dogs, either a hybrid or a purebred costs differently. An individual should check the license and health of the dogs before purchasing.

In the given example, the dog breeder is trying to purchase a three-year male dog. She saw an advertisement that the male dog is available at the rate of dollars 700.

Before purchasing the dog, the breeder should check:

Thus, the breeder should check all the authenticity of the dog and its health.

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Answer: Whereas volcanic craters arise from deep inside the planet, impact craters originate in outer space.

Explanation:

Answer:

Plastids

Explanation:

Answer:

1. Ribosomes

10. Osmosis

11. Cell membrane

12. Solvent

13. Cytoplasm

15. Organ

16. Permeable

17. Specialized cells

18. Solute

19. Active transport

2. Electron microscope

3. Organelles

4. Mitochondria

5. An Organ system

6. Optical microscope

7. Tissue

8. Concentration gradient

9. Nucleus

14. Diffusion

Answer:

Because natural selection acts directly only on phenotypes, more genetic variation within a population usually enables more phenotypic variation. Some new alleles increase an organism's ability to survive and reproduce, which then ensures the survival of the allele in the population. Sexual reproduction promotes genetic variation by producing different gene combinations. Meiosis is the process by which sex cells or gametes are created. Genetic variation occurs as alleles in gametes are separated and randomly united upon fertilization.

Answer:

are tight coils of DNA

carry thousands of genes

Explanation:

Answer:

1,5

Explanation:

Answer:

The answer is all of them

Explanation:

This is the answer because I’m a genius. You’re Welcome

Examples of stimuli are the strong smell of a woman's perfume, the sour taste of a lemon, pinching your skin, dimming the lights in a room, and having your back massaged. The correct options are a, b, c, d, and e.

Humoral stimuli, hormonal stimuli, and neurological stimuli are the three basic types of stimuli that cause the endocrine glands to produce and release hormones.

With changes in the concentration of extracellular fluids, the humoral stimulus governs hormone release.

The strong smell stimuli the sense organs and sour taste stimuli our tongue and pinching in the skin gives stimuli to obtain that someone pinched pour skin

The neural stimuli allow hormone production straight from the glands.

Therefore, the correct options are a, b, c, d, and e.

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Answer:S phase

Explanation: or aka the 3rd phase

Explanation:

photosynthesis is an endergonic process as it involves the absorbtion of energy (in the form of sunlight), while cellular respiration is an exergonic process as it involves the release of energy in the form of ATP molecules-the energy currency of the cell.

Answer:

n

Explanation:

Answer:

the answer is A

Explanation:

The sun powers the water cycle and creates precipitation and the dams run off of water from the rain added to the river or lake.

Answer:

Cells

<

Tissues

<

Organs

<

Organ system

Answer:

cell, tissue,organ, system,these are the four level of organization in our body,from smallest to largest

Answer:

This question is incomplete, however, it is asking to identify the following variables:

Independent variable: Temperature

Dependent variable: Number of yeast cells

Constants: same amount of nutrients, same number of yeast cells, same medium

Explanation:

- Independent variable is the variable that the experimenter changes or manipulates in order to bring about a measurable effect. In this experiment, the TEMPERATURE at which the yeast are kept is the independent variable.

- Dependent variable is the variable that responds to the changes made to the independent variable. It is the variable that is measured by the experimenter in the experiment. In this case, The NUMBER OF YEAST CELLS was counted, hence, it is the dependent variable.

- Constants are variables that are kept unchanged or same for all groups by the experimenter in order not to influence the experiment's outcome. In this case, the CONSTANTS are: same amount of nutrients, same number of yeast cells, same medium etc.

Answer:

The 3 would be the following:

A

captive breeding of organisms

E

introduction of invasive species

restoration of degraded land

Answer:

B. algae

Explanation:

biotic factor means something alive is in the factor. all the others are abiotic factors

The biotic factor is a living factor providing a source for ecosystem development, hence option b algae in the water are the correct option.

A biotic factor is a live entity that influences its surroundings. Aquatic plants, fish, amphibians, and algae are all examples of freshwater ecosystems.

A biotic factor is a live entity that influences its surroundings. Aquatic plants, fish, amphibians, and algae are all examples of freshwater ecosystems.

Turbulence, temperature, water clarity, habitat size, and water depth all influence the structure and function of ponds and lakes. Temperature interacts to affect lake stratification and water circulation.

Therefore algae that balance the aquatic ecosystem is a major abiotic factor, hence option b  in water-growing algae is correct.

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Answer:

true

Explanation:

Answer:

its true if they do not move locations so that answer is kinda tricky id choose true tho

The actual volume of bromine in each beaker will be same only the difference in height will be comparable. Therefore, option (C) is correct.

A liquid's attributes are;

1) Compared to the volume occupied by a gas, the volume of a liquid is relatively stable at conditions that allow it to remain in the liquid state.

2) A liquid will take the form of the container it is placed in.

3) A liquid's surface in a container must be flat for the attraction forces between its molecules to be in equilibrium both at the liquid's surface and within its body.

Therefore, there will be variations in the measured height of the same volume of bromine in each beaker given that the volume of the bromine is measured in a 50 ml beaker and a 100 ml beaker.

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The cell membrane is not a solid structure. It is made of millions of smaller molecules that create a flexible and porous container.

Explanation:

Answer:

all white

If students are stuck on this one, advise them to make a "key" to help them sort it out.

PP = purple, Pp = purple, pp = white

Explanation:

Answer:

The correct answer would be - a decrease in the numbers of RBCs will lead to a decrease in the ability for gas exchange in a person.

Explanation:

In the case of anemia, there would be a decrease in the number of RBCs that might be due to increased destruction of these cells, or low production of RBCs, that transporting oxygen and carbon dioxide affects the ability for gas exchange in an individual.

RBCs carry and transport oxygen to various body parts and then carry back carbon dioxide from different parts of the body to the lungs for gaseous exchange but with less number of RBCs leads to impair or decreased gas exchange in the case of anemia.

Answer:

The graphical representation of the age structure is known as age pyramid (option D).

Explanation:

The age pyramid or more properly called population pyramid groups all the individuals of a population, distributing them by age and sex. The name is due to the fact that, in general, the bar graph resembles a pyramid.

The age groups are distributed in the pyramid by age from lowest (bottom) to highest (top), with the sexes forming the sides of the pyramid.

In emerging countries the population is relatively young, which makes the base of the pyramid wide, narrowing as it moves up to the upper age groups.

    Age group, age graph or age scale do not correspond to the population graph where the age and sex structure of a population are expressed.

Answer:

Option D (i just took the test)

Explanation:

Answer:

In the crossing of individuals with multiallelic traits, the crossing of a GGHHII individual with a gghhii individual would produce offspring of hybrid individuals for all three traits whose genotype would be GgHhIi (option c).

Explanation:

The individuals GGHHII and gghhii are pure lines for each of the traits —multiallelic traits— they express, one of them having the three dominant traits and the other three recessive traits. The product of crossing two pure lines with dominant and recessive traits is an offspring of 100% heterozygous individuals.

This can be tested by making a Punnett square for this cross:

GGHHII X gghhii

Alleles     GHI        GHI

ghi         GgHhIi   GgHhIi

ghi         GgHhIi   GgHhIi

Thus the offspring in the cross of two individuals, dominant and recessive, for multiallelic traits G, H and I is GgHhIi

Answer:

16/2= 8

Explanation:

Answer:

A further increase in the size of a cell could result in a surface area too small for adequate exchange of materials.: A large surface to volume ratio means that a small amount of living matter has a large surface through which nutrients, oxygen and wastes can diffuse.

Answer:Diffuse in all regions of the filter

Explanation:The potassium level in dialysis is often lower than usual because of incomplete equilibration