BIOLOGY MIDDLE SCHOOL

Which is a possible disadvantage of true breeding?A) The chances of genetic disorders are reduced.
B) Successive generations have shorter life spans.
C) No new genes are added to the future generations.
D) Undesired traits are introduced into future generations.

Answers

Answer 1
Answer: C) no new genes are added to the future generation!
Answer 2
Answer: C.No new genes are added to the future generations. 

Related Questions

What steps can someone take to prevent or treatH1N1 influenza?
Explain process of mitosis​
What is stimulus? (7th grade life science question)
How long was Bruno jailed and tortured
What is a group of cells called

How has climate influenced the size of house sparrows? A.
They have gradually become smaller in colder parts of the country.

B.
Their size has not changed in response to climate.

C.
They have gradually become larger in colder parts of the country.

D.
Their size has increased in response to heavy rainfall.

Answers

The study of living things is called biology. There are two types of living are these are plants and animals.

The correct answer to the question is A that is They have gradually become smaller in colder parts of the country.

What is climate?

Climate is the long-term weather pattern in an area, typically averaged over 30 years. More rigorously, it is the mean and variability of meteorological variables over a time spanning from months to millions of years.

According to the question, the size is directly proportional to the temperature of that given area. Colder the climate smaller the organism and vice versa. This statement is given by Allens and is known as Allens rule

Hence, the correct answer is option A.

For more information about climate change, refer to the link:-

brainly.com/question/14688752
C.hope it helps!:/. Thx for ur brainly time DANCE ON!!!!!!

How can population growth be affected by different factors?

Answers

Majorly population growth is affected by birth and death rates and also on the migration, immigration factors it also depends on the favourable condition.

like if environment is favorable enough food, living space, no competition, no lethal diseases and also temp. water availability) than growth will be good, if not than growth will be less.

These density-independent factors include food or nutrient limitation, pollutants in the environment, and climate extremes, including seasonal cycles such as monsoons. In addition, catastrophic factors can also impact population growth, such as fires and hurricanes.

Fertility Rate

The factor which affects the growth of the population in the biggest way is the fertility rate. The fertility rate is typically measured by the number of children per one woman of child-bearing age. If the fertility rate is larger than 2, the rule of thumb is that the population should rise, as there are more children than their parents. On the other hand, if this ratio is below 2, the population of the region may be destined for a decline.

Mortality Rate

A key factor affecting the growth of the population is the death, or mortality, rate. Just as the birth of new people increases the population size, deaths decrease it. The factors that affect the mortality rate include the availability and affordability of quality health care and lifestyle habits – for example, whether they smoke or do physical exercises regularly.

Immigration and Emigration

Cross-border migration is the act of people moving from one country to another. It affects the population size of both the host and destination countries. Emigration is caused by a number of factors, such as fleeing war, finding education, seeking new jobs or joining family members. When a person emigrates from a country, its population shrinks. When someone moves to a country from another place, it is known as immigration. Whether or not a person is allowed to immigrate is controlled by the country that will host this person.

Scientists use the term "atomic model" to describe the atom. What is a reason why it is called a model? * A.atoms are too small to see directly
B.the atomic model is a representation of what scientists believe the atom to be C.models can continuously be modified as new discoveries are made
D.All of the above are true.

Answers

All of the above are true.

A is correct, because, well. We can’t see atoms directly, at least not with our current levels of technology.

B is correct because a model is a representation of something by nature.

C is correct because our knowledge of the atom is still growing, and as we still don’t know about some future atomic developments, it’s called a model so that there’s still flexible room for new discoveries.

Hope this helps!

Which part of the electromagnetic spectrum do plants use for photosynthesis

Answers

The red and the blue parts of the visible spectrum are used by the plants for photosynthesis

which animal can leave its eggs to hatch and does not need to take care of the infants? A ducks B sea turtles C frogs D penguins

Answers

the answer is B) sea turtles

I took this quiz too, the answer its B.) Sea Turtles.

Which process will result in a gain of energy in an ecosystem

Answers

Photosynthesis will result in gain of energy in an ecosystem
"Nearly all of the energy that drives ecosystems ultimately comes from the sun. Solar energy, which is an abiotic factor, by the way, enters the ecosystem through the process of photosynthesis. You can learn more than you want to know about this process in the unit on photosynthesis. Or, you could just chat with your local botanist. Everyone has one, right? The organisms in an ecosystem that capture the sun’s electromagnetic energy and convert it into chemical energy are called producers. Not to be confused with these Producers.

The name is appropriate because producers make the carbon-based molecules, usually carbohydrates, that the rest of the organisms in the ecosystem, including you, consume. Producers include all of the greenplants and some bacteria and algae. Every living thing on Earth literally owes its life to the producers. The next time you see a plant, it wouldn’t be a bad idea for you to thank it for its services...which, as you will learn in other units, go way beyond just supplying you with food. 

After a producer has captured the sun’s energy and used it to grow yummy plant parts, other organisms come along and greedily gobble it up.These primary consumers, as they are called, exclusively feed onproducers. If these consumers are human, we call them vegetarians. Otherwise, they are known as herbivores. 

Primary consumers only obtain a fraction of the total solar energy—about 10%—captured by the producers they eat. The other 90% is used by the producer for growth, reproduction, and survival, or it is lost as heat. You can probably see where this is going. Primary consumers are eaten bysecondary consumers. An example would be birds that eat bugs that eat leaves. Secondary consumers are eaten by tertiary consumers. Cats that eat birds that eat bugs that eat leaves, for instance.

At each level, called a trophic level, about 90% of the energy is lost. What a shame. So, if a plant captures 1000 calories of solar energy, a bug that eats the plant will only obtain 100 calories of energy. A chicken that eats the bug will only obtain 10 calories, and a human that eats the chicken will only obtain 1 calorie of the original 1000 calories of solar energy captured by the plant. When you think about this way, it would take 100 1000-calorie plants—those would be enormo plants, by the way—to produce a single 100-calorie piece of free-range chicken. You are now recalling all of the plants you have ever forgotten to water in your life and feeling really, really terrible about it, aren't you? 

The relationships among producers, primary consumers, secondary consumers, and tertiary consumers is usually drawn as a pyramid, known as an energy pyramid, with producers at the bottom and tertiary consumers at the top. You can see from the example above why producers are at the bottom of this pyramid. It takes a lot of producers for higher-trophic-level consumers, like humans, to obtain the energy they need to grow and reproduce.

This is the answer to the great mystery as to why there are so many plants on Earth. We will even spell it out for you because it is so important to understand: there are so many plants on Earth because energy flowthrough ecosystems is inefficient. Only 10% of the energy in one trophic level is ever passed to the next. So, there you have it. We hope you feel fulfilled.



In addition to energy pyramid diagrams, ecosystem ecologists sometimes depict the relationship between trophic groups in a linear way, with arrows pointing from one organism to another. If there is only one producer, one primary consumer, one secondary consumer, and one tertiary consumer, this linear diagram is called a food chain. Food chains help ecologists and students visualize the interactions between organisms in an ecosystem. As always seems to be the case, it isn’t ever that simple. In fact, trophic interactions among organisms in an ecosystem are often really complex. It’s rare that an ecosystem only has one species at each trophic level. Usually, there are multiple producers that are eaten by multiple primary consumers. Some consumers eat different kinds of producers. Likewise, secondary consumers sometimes eat producers as well as primary consumers. These are known as omnivores. 

These complex relationships are often depicted—if they can be figured out, that is—in a diagram called a food web. These diagrams can become messy indeed, depending on the size of the ecosystem and the number of interactions among trophic groups. If you like puzzles and biology, though, ecosystem ecology is the field for you. 



Ecologists use food webs to better understand the intricate workings of the ecosystems they study. Understanding exactly who is eating whom can provide valuable information for conservation biologists as well. Such knowledge can aid in restoration efforts, species recovery projects, and preservation efforts, just to name a few instances. In any case, uncovering food webs goes a long way to understanding the first half of an ecosystem, the community.
Other Questions
About 500 million years ago, trilobites such as this were common ______________ that once covered much of Indiana. Violent storms often occurred in the same area and the trilobites were covered quickly by sediment, hidden for hundreds of millions of years.A. along riverbanks B. in the sandy plains C. in warm, shallow seas D. throughout the mountains
Why is the Moon Sometimes out in the Day?answer the question using scientifically words, thank you!
Hannah is comparing a rock from a riverbed and a rock from deep underground. One is very smooth, and the other has very rough edges. Explain why each rock was probably found in that location.
How many independent variables can be tested in a controlled experiment? A. one B. two C. three D. as many as you want