4.(01.01 MC)
What must happen for scientific theories to be accepted as valid?

Answer:

D - cost of purchasing

Explanation:

Solar panels use the sun to operate which has no cost so the answer is not C

The sun does not create green house gases and has nothing to do with pollution so the answers can't be a or b leaving us with answer choice D

Answer:

Both cells are plant cells.

Explanation:

Answer:

Reptiles have dry, tough skin covered in scales, Reptiles breathe using lungs.  Reptiles’ kidneys concentrate urine.  Young reptiles develop inside an amniotic egg.

Explanation:

good luck :)

Answer:

Reptiles have dry, tough skin covered in scales, which reduces water loss. Reptiles breathe using lungs; they do not exchange gases through their skin. Their kidneys also help prevent water loss by concentrating their urine. Young reptiles develop inside an amniotic egg, which is covered with membranes and a shell to prevent it from drying out.

Explanation:

sample response

Answer: The answer is Oxygen.

[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\red{sw}}{\orange{er}} {\color{yellow}{:}}}}}[/tex]

When Went placed the agar block on one side of the decapitated shoot, the shoot curved away from the agar as it grew. This demonstrated that some kind of hormonal signal had diffused into the agar from the coleoptile tips. ... Went's experiment represented the first time that anyone had isolated a hormone from plants.

the crop will be a commonly planted which can reduce the production of other healty plants and creating fuel out of the crops is bad for us and our environment

Answer: The answer is decreasing soil fertility

parental genotype I^o I^a × I^o I^b

Answer:

Ok, here it is! Brainliest maybe? <3

Explanation:

Answer:

Energy and nutrients are cycled throughout all the different components of the ecosystem. The non-living components like heat and nutrients are called abiotic factors. Both biotic and abiotic factors contribute to an environment's health. Biotic factors include plant productivity and animal behavior.

Answer:

In the light-dependent reactions, energy from sunlight is absorbed by chlorophyll and that energy is converted into stored chemical energy. In the light-independent reactions, the chemical energy harvested during the light-dependent reactions drives the assembly of sugar molecules from carbon dioxide.

Answer:

The primary function of a vacuole is that it can store water and food.

Explanation:

Answer:

A vacuole is a membrane bound cell organelle

the function of vacuoles is to maintain water balance and for storage of something

the size of vacuoles in plant cell is very big it takes more than half of the cell but in animals very small

hope it helps

Answer:

Both are similar due to origin of the membrane voltage and impulse propagation whereas both are different in their function.

Explanation:

Cardiac muscle cell are similar to a nerve cell because both have the same origin of the membrane voltage and impulse propagation also occurs in the same manner whereas, cardiac muscle cell is different to a nerve cell because cardiac muscle cells form the cardiac muscular system while nerve cells form the nervous system. Muscle cells are responsible for the contraction and relaxation of heart while on the other hand, nerve cells are responsible for the transmitting of nerve impulses throughout the body.

Complete question: Sickle-shaped red blood cells result from a mutation in the gene that codes for hemoglobin. This mutation results in sickle-cell anemia. A partial sequence of bases from a normal hemoglobin gene and a sequence that results in sickle-cell anemia are shown below (the diagram is in the attached file)

What type of mutation is depicted in this sequence?

Answer:

The type of mutation is known as SUBSTITUTION.

Explanation:

Sickle cell anaemia is an inherited disease caused by abnormal shape of the red blood cell. This abnormal red blood cell contains less haemoglobin and cannot transport oxygen efficiently round the body. Sickle-shaped (abnormal) red blood cells result from a MUTATION in the gene that codes for hemoglobin.

Mutation is the random changes in DNA that alters genetic information and so introduce new characteristics. The different categories of mutations include:

--> Chromosomal mutation and

--> Point mutation.

SUBSTITUTION is a type of point mutation in which one base is incorrectly added during replication and replaces the pair in the corresponding position on the complementary strand. From the diagram, a partial sequence of bases from a normal hemoglobin gene and a sequence that results in sickle-cell anemia, shows a substitution of an A for the middle T. This leads to GUA in the messenger RNA, which specifies the amino acid valine. The substitution of valine for glutamic acid at this particular position alters the chemistry of the hemoglobin such that it sticks together if it is not binding oxygen, creating sickling of the red blood cells.

Answer:D

Explanation:

The fetus develops toenails, lips, and eyelashes is the change that takes place during the third trimester of a woman's pregnancy.  Therefore, option (B) is correct.

By the third trimester, which begins around the 28th week of pregnancy and lasts until birth, the fetus has already formed most of its organs and body parts. During this stage of pregnancy, the fetus undergoes significant growth and development. This includes the development of toenails, lips, and eyelashes. Additionally, the fetus begins to accumulate body fat, and its brain undergoes rapid development.

To answer the other options, the formation of teeth begins during the embryonic stage, which occurs in the first trimester. The mother's uterine contractions typically do not begin until labor, which occurs at the end of the third trimester or later. The fetus's hands and feet appear during the embryonic stage, specifically around the 6th week of pregnancy.

Learn more about pregnancy, here:

https://brainly.com/question/28547022

#SPJ7

Answer: its d i just took the test

Explanation:

Ecological succession usually includes change EXCEPT for the option" A" which is the number of different kinds of plants.

Ecological succession is the process that describes how the structure of a biological community (that is, an interacting group of various species in a desert, forest, grassland, marine environment, and so on) changes over time.

Thus, according to ecological succession, the number of different kinds of plants.

To learn more about ecological succession click here:

https://brainly.com/question/26683356

Answer:

0%

Explanation

all offspring will be hererozygous (Tt) it order for one of the offspring to have a long tail it would have to be (tt) and TT x tt cant make that

Answer: D is the answer

Explanation:

Answer:

Although the rat liver is typically lobated2 and its ap- pearance does not resemble that of the human liver, the hepatic lobes of the rat liver have been found to be equivalent to the sectors of the human liver. As rats and humans belong to the class Mammalia, similar em- bryological development is expected.

Answer:

C

Explanation:

due to all the other questions come naturally that stresses the ecosytem

Answer:

Mutualism is a symbiotic relationship in which both species benefit. Commensalism is a symbiotic relationship in which one species benefits while the other species is not affected. Parasitism is a symbiotic relationship in which one species (the parasite) benefits while the other species (the host) is harmed.

Answer:

There would be an overabundance of organic waste.

Explanation:

I took the same test :)

Biodiversity decreases with increased soil erosion.

Soil erosion is the process by which soil is moved or displaced by the action of wind, water, or other environmental factors. This can occur naturally or can be caused by human activities, such as deforestation, agriculture, construction, or mining. Soil erosion can have negative impacts on the environment, as it can lead to the loss of topsoil, which is the most fertile layer of soil and contains many of the nutrients needed for plant growth. This can reduce the productivity of land and affect agricultural yields. Soil erosion can also lead to water pollution, as soil particles can be carried by runoff into streams, rivers, and lakes, which can harm aquatic ecosystems and reduce water quality. In addition, soil erosion can have negative impacts on infrastructure, such as roads, buildings, and bridges, as it can cause the soil to become unstable and lead to landslides, mudslides, and other types of erosion-related damage. Therefore, soil erosion is an important environmental issue that requires careful management and conservation practices.

B. Biodiversity. Soil erosion can have a negative impact on biodiversity, as it can destroy or alter habitats, reduce the availability of nutrients and water, and create barriers to plant and animal migration. Soil erosion can also lead to the loss of topsoil, which is the most fertile layer of soil and contains many of the nutrients needed for plant growth. This can have a cascading effect on the food chain, as it can reduce the availability of food for herbivores, and in turn, reduce the number of predators that rely on these herbivores for food.

To know more about soil erosion, click here

https://brainly.com/question/9837143

#SPJ1

An ectotherm is most likely to maintain homeostasis during hot weather by burrowing underground. Thus, the correct option is A.

Homeostasis may be defined as the process that involves a condition of balance among all the body systems required for the body to survive and operate correctly.

Ectotherms are those organisms that can not be able to maintain their internal body temperature with respect to the external one.

They follow different strategies like hibernation during winters and aestivation during summers.

During hot weather, they usually undergo summer sleep by burrowing underground.

Therefore, the correct option for this question is A.

To learn more about Ectotherms, refer to the link:

https://brainly.com/question/757440

#SPJ5

Answer:

Neutrons bind with protons and one another in the nucleus via the nuclear force, effectively moderating the repulsive forces between the protons and stabilizing the nucleus. Hope this helps. Can u give me brainliest

Explanation:

Answer:

Organic matter : biofuels

Explanation:

Biomass is derived from Organic matter in the soil and is used to produce Biofuels. Hope this helps

Please mark Brainlist