Question 1 (2 points)
How did we define homeostasis?

Question 1 options:

Actively changing due to an environmental stimulus


Taking “raw” materials and turning it into a usable energy


The ability to increase in size and complexity


Regulation of bodily functions to stay within a certain range

Question 2 (2 points)
Saved
A hypothesis can be described as

Question 2 options:

a testable explanation.


a theory.


a law.


a wild guess.

Question 3 (2 points)
You notice you begin to sweat whenever the door to your bedroom is closed. This is most closely related to which step in the scientific method?

Question 3 options:

making an observation


forming a hypothesis


forming a conclusion


recording data

Question 4 (2 points)
In an experiment, the variable being tested or changed is the

Question 4 options:

control variable


dependent variable


responding variable


independent variable

Question 5 (1 point)
Match each of the following terms with the correct definition?

dependent variable


controls or constants


independent variable


hypothesis

1.
An testable explanation to explain a natural phenomenon

2.
the variables that are held constant in an experiment

3.
the variable that is measured as data in an experiment

4.
the variable that is controlled by the experimenter

Question 6 (2 points)
Some chickens lay an egg every day. Other chickens produce few eggs. A study is planned to examine some factors that might affect the number of eggs produced by chickens. Which of the following is NOT a suitable hypothesis for the study?

Question 6 options:

If the cage for the chickens is larger, they will produce more eggs.


If more eggs are produced by the chickens, they will lose more weight.


If there is more protein in the feed, then more eggs are produced.


If chickens receive more hours of light, then they will produce more eggs.

Question 6 (2 points)
Some chickens lay an egg every day. Other chickens produce few eggs. A study is planned to examine some factors that might affect the number of eggs produced by chickens. Which of the following is NOT a suitable hypothesis for the study
If the cage for the chickens is larger, they will produce more eggs.


If more eggs are produced by the chickens, they will lose more weight.


If there is more protein in the feed, then more eggs are produced.


If chickens receive more hours of light, then they will produce more eggs.

Sam wished to investigate how fertilizer run-off affects the growth of algae in freshwater lakes and streams. He set his experiment up as follows. He placed 900 ml of water into each of five 1000 ml glass beakers. To each beaker, he added 5 ml of water from an aquarium which contained a large concentration of algae. The beakers were placed under a lamp which was on a timer to provide 12 hours of light each day. Liquid fertilizer was added to the beakers in the following amounts.

Each week, a random sample from each of the beakers was examined under a microscope to get a count of the number of algal cells present.

What is the independent variable in this experiment?

Answer:

Explanation:

https://quizizz.com/admin/quiz/5c9100e1202f89001c843569/stages-in-aquatic-ecological-succession

The event described, where a layer of humus covers the sandy bottom of the lake and affects the fish populations, is an example of succession.

Succession is the process of ecological change over time in a particular area. It involves a series of predictable and sequential changes in the composition and structure of an ecosystem.

In this case, the gradual accumulation of humus, a layer of decomposed organic matter, is altering the habitat conditions in the lake.

The decline in the populations of black bass and bluegill, which build nests on the sandy bottom, can be attributed to the changing habitat.

The humus layer is likely making it difficult or impossible for these fish to construct their nests. On the other hand, fish that are capable of making nests in humus, possibly adapted to this type of substrate, are increasing in numbers.

Therefore, the observed changes in fish populations and the altered habitat due to the accumulation of humus indicate a shift in the ecological community over time, which is a characteristic of succession.

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Answer:

penis

Explanation:

sex

Answer:

all the offspring recieve identical genetic information

Explanation:

Answer:

it is b X-spongy; Y-marrow, i am doing the test, and the other person is correct.

Explanation:

The arrows point to the bone formations called X-marrow and Y-spongy. So, the correct option is D.

Osteons or haversian systems are tightly packed together to form compact bone. The osteon is made up of concentric circles (lamellae) of matrix surrounding a central canal known as the osteonic (haversian) canal. The bone cells (osteocytes), which are situated between both the rings of matrix, are found in regions known as lacunae.

The bone marrow stores fat and produces blood cells. Spongy bone, also known as cancellous bone, is composed of tiny, needle-like bone fragments organized in a honeycomb pattern. Bones that are more flexible can still be strong while weighing less. In the given example, the arrows indicate to a X-marrow and Y-spongy bone structures.

Therefore, the correct option is D.

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Answer:

The function of the proteins that are embedded in the cell membranes is to transport materials in and out of the cell. Proteins are large sized biomolecules that are also referred to as macromolecules at times. They are made up of large chains of amino acid molecules.

Please mark branliest!

Answer:

D

Explanation:

Different land areas of the United States grow different crops because some crops can't be grown everywhere. For example some plants can survive the winter while others can't.

Answer:

c. neighbor

Explanation:

half the mother, half by fathee

Tropical rainforest, temperate deciduous forest, temperate rainforest

I'm not too sure if the temperate forest is more diverse than the rainforest, so sorry if I'm wrong. Tropical rainforests are the most diverse because of the humidity, which is water. The water helps the soil stay healthy, which makes more plants, which makes more animals and insects.

I hope this helps! Good luck!

The biomes in order from the greatest to least diversity will be tropical rainforest, temperate deciduous forest, and temperate rainforest.

Tropical rainforests refer to the rainforests that occur in areas that have no dry season.

The temperate deciduous forest refers to a biome that always changes. It has seasons such as winter, spring, summer, and fall.

Temperate rainforest refers to the broadleaf or coniferous forests that receive heavy rain. This condition supports ferns, shrubs, etc.

It should be noted that the biome with the greatest diversity is tropical rainforest while the least is the temperate rainforest.

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Answer:

Binary Fission is the reproduction of prokaryotic cells (bacteria and bacteria-like Archaea) is accomplished through binary fission. Binary fission is essentially cloning. Barring mutations that may have occurred when the genetic material was copied (a process called replication), the two resulting daughter cells are identical to the parent cell.

Mitosis is a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.

Meiosis is a process where a single cell divides twice to produce four cells containing half the original amount of genetic information.

Answer:

Thought the process of discussion and ossmossis as due to gaseous exchange

Explanation:

With the aid of thin layers and large surface area animal are able to transport material thought the blood due to diffusion and osmosis In order to transport different materials from a every of high concentration to a low concentration until material is equally distributed throughout the body

Answer: A physical change

Explanation: since the melted they are still Crayons. You can freeze it and it would still be a crayon. So it was only a physical change

Answer:

1. Volume

2. Mass

3. Units?  Metric System? I'm not sure about this one

4. Liters

5. Kilograms

6. Meters, but I'm pretty sure its the whole metric system

Explanation:

I have to go back and look at questions 3 and 6.

Hope I helped :)

Answer:

Many farmers use chemical herbicides to kill weeds and

insecticides to kill insects. Using genetic engineering, scientists

have developed ways to resist harmful crop pests. In this Gizmo,

you will use genetic engineering techniques to create genetically

modified corn.

Explanation:

Many farmers use chemical herbicides to kill weeds and

insecticides to kill insects. Using genetic engineering, scientists

have developed ways to resist harmful crop pests. In this Gizmo,

you will use genetic engineering techniques to create genetically

modified corn.

Answer:

this is how proteins are bound, through a series of amino acids combined in a chain

Explanation:

The main difference between glucose and ATP is that Glucose is a storable form of energy, while ATP is a usable form of energy.

Glucose is storable form of energy because it can't be used as energy until it can be broken down by mitochondria of the cell while on the other hand, ATP is the usable form of energy which we can get from the break down of glucose molecules. Our cells use ATP as a fuel to do various activities of the cell so we can conclude that in glucose, energy is present in stored form whereas ATP is used as energy in various activities.

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Answer:

Reaction times slow with age, and they correlate with scores on tests of higher cognitive functions many of which also deteriorate with age. The age-related changes in reaction times account for a substantial proportion of the age-related variance in higher cognitive functions (e.g., Deary, 2000. 2000Reflexes do slow with age. Physical changes in nerve fibers slow the speed of conduction. ... But the effect of age on reflexes and reaction time varies greatly from person to person. You can actually slow down—even reverse—the effects of aging by staying physically active.The next time some twenty-something complains that they feel old, you can reassure them that their feelings are, in fact, not ridiculous. After studying 3,305 people ages 16 to 44, researchers found that the brain's response time begins to decline at age 24.

Explanation:

Answer:

lithosphere

Explanation:

is up of brittle crust and the top part of upper mantel and also the coolest and most rigid part of the earth

Answer:

Lithosphere:

The lithosphere is the rigid outermost layer of the earth known as the mantle and the crust. And it is defined by its rigid mechanical properties.

Asthenosphere:

This layer is highly viscous and is very mechanically weak and is located below the Lithosphere it is also known as the ductile region of the upper mantle.

Mesosphere:

The mesosphere is the third layer of the atmosphere, directly above the stratosphere and directly below the thermosphere. In the mesosphere, temperature decreases as altitude increases.

Answer:

Muttation can occur during the exchange of genetic meterial from homologous chromosomes which may led to cause deseases in some cases.

Explanation:

Homologous chromosomes exchange genetic material during the process of meiosis.

Meiosis is a type of cell division in which germ cells present in the sexually-reproducing organisms produces the gametes, such as sperm or egg cells. It involves two rounds of division which results in four cells with only one copy of each chromosome.

These four cells are haploid in nature. Meiosis produces the sex cells or gametes like eggs in females and sperm in males.

Meiosis is divided into nine stages. These are divided between the first time the cell divides (meiosis I) and the second time it divides (meiosis II).

Thus, homologous chromosomes exchange genetic material during the process of meiosis.

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Answer:

Water reacted with chemicals in the model cell.

Explanation:

hope it helps

potential energy

motion

at rest

position .

The name for this type of energy is potential energy

motion

position

kinetic energy .

It is called this because it has the potential to do work. Objects that are in

position

potential energy

kinetic energy

motion have

at rest

motion

kinetic energy

potential energy .

Explanation:

Parasitism. Ticks are complete parasites with no regard for the well being of their carriers.

Answer:

Water

Explanation:

Water never runs out

Answer:d

Explanation:

Answer:

what do u need help with?

Explanation:

:P