How To Define Species


During the most recent ice age, glaciers divided an ancestral population of crows; one group became all-black carrion crows, the other hooded crows with gray breasts and bodies. Illustrations by François-Nicolas Martinet / Alamy

Protecting species from extinction has been a running theme in our pages over the years. Underlying these many stories was an assumption, at least on our part, that defining boundaries between species is settled science. We will no longer take that for granted:

Where Do Species Come From?

By studying crows, a German biologist has helped to solve a centuries-old mystery.

The evolutionary biologist Jochen Wolf was working from home when we first spoke, in April, 2020. Germany was under lockdown, and his lab, at Ludwig Maximilian University, in Munich, had been closed for weeks. Still, a reminder of his research had followed him from the office. “I have a crow nest right in front…

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Posted in earth | Leave a comment the Helper Review

Math assignments may be difficult for students. Even if your area of study is math, you may need some help with math homework. The situation may be worse if you are studying some other subject. Especially if it is a humanitarian subject or a language. But there are one or two hours of math a week. You do not need this subject, and you see no sense in studying it.

Math homework takes lots of time if you do not understand it. You may think you are wasting your time on a subject not related to your future career. Some students try to solve the problems themselves. Yet, there is always someone to help you with it. If you don’t have time for calculations, you may pay an expert.

There are many math assignment help websites where you can find information. You may use online calculators or video courses. Yet, you may find a service that provides paid math help online. Let’s look at What are the advantages of the website?

  1. Your assignment will be done by a qualified and experienced expert

The people who will do it have the relevant diplomas. When they start working, they pass exams to prove their math knowledge level. So, the work will be best done whatever complicated it is.

  • On the website, you may find instant math help online in the chat

Such hw help is free for everyone. The managers can tell you about the ordering procedure. If you have any other questions, you can also ask them. The best teachers will help you for free. You also have 24/7 online support in the chats. No matter where you are from, the managers will give you an instant answer at any time of the day.

  • What if I need detailed explanations of the solution to my homework? Then you may pay for a complete assignment

What does the website guarantee? Did the writer forget about the instructions or are there grammatical mistakes? you may order free editing. The expert will correct the mistakes for free. All the assignments are done in advance before the deadline. So, there is always time for corrections.

  • What if I am completely dissatisfied with the work done for me? Then the website will compensate for the loss

You will get a full refund for the order. Yet, to get the refund, you should prove that it is the fault of the service. If you haven’t written clear instructions, you are responsible for the situation.

  • provides online math homework help with more than 70 disciplines

They may be simple, for example, algebra or geometry. Yet, there is also logic, statistics, and trigonometry help. In the math homework helper, you may choose the discipline you need. There is an appropriate field named ‘Homework services’. The person who is an expert in the subject will do the work.

  • You may be sure that all the information you give will be safe

The writers conclude contracts of non-disclosure with the service. Your personal data will also be private. Every task the customer orders will be given to the expert who does it. No other writer will see the instructions.

When the managers send the assignment to a writer, all your personal data gets deleted. There is a special feature in Word. The expert will not see your name or desktop data. When the managers check the paper for plagiarism, they do not write your information.

The experts do not include your name, city, and course name on the cover page. This also provides you complete privacy. You have to fill in this information by yourself. When you order an assignment, you only state your instructions.

So, AssignMaths is a great service to order math homework help. You may choose whatever subject you need and order the assignment. All the students may use the guarantees. You may be sure that your data is private and the assignment is best done.

Math Homework Helper: How Much Does It Cost?

You have decided to order an assignment. How will you pay for it? The advantage of is that you determine the cost. The price depends on the following:

  1. Type of the service

There are 40 types of assignments you may choose. For example, it may be an essay or lab report. You may also choose a simple math homework help. The more complicated the type is, the more money you will pay.

  • Your academic level

Here, you should choose if you are a student at school, college, or university. The cheapest homework will be at school. If you are a university student, you will pay more. The reason is that university assignments are more complicated. So, they need more time and skill to do them.

  • Deadline

You may give from 4 hours to 14 days for the writer. The most urgent assignments are the most expensive. So, it is more convenient to order the math homework help in advance. The price will be lower and the writer will have time for corrections.

  • The number of pages

Think about how many pages you need to write. Your teacher may need some definite number of pages. Then you should state it in the instructions before ordering. One page takes 275 words. There is an automatic calculator on the website. So, you can easily see how many words you need. You pay for the number of pages.

At the field ‘Pricing’ you may find a table with prices for different features. The prices are in dollars. If you want, you may choose another currency. The price also depends on the law of the country where you live.

You may be sure that there are no extra fees. The whole cost is shown on the website when you order the service. If you are a constant customer, you may get several pages or definite services for free. Yet, there is no other discount on the website.

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भूली दास्तान फिर याद आ गई – दिल्ली की जितनी सराय, उतनी कहानियां

दिल्ली में धर्मशालाओं से सदियों पहले सराय बनने का सिलसिला कब शुरू हुआ, कहना मुश्किल है। लेकिन कई पुरानी-पुरानी सराय का जिक्र मिलता है-कोई सूफी संत के नाम पर है, तो कोई ठहरने वालों के……

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The City That Took on Mass Tourism and Won

for the love of nike

Y’all, I have good news.

Italy banned cruise ships’ entry into Venice starting August 1st. The once-upon-a-time-city-state’s lagoon has been declared a national monument.

2020 reminded citizens and ecologists alike how healthy the waters were without the larger than life vessels. So a few weeks ago, when the first cruise ships since COVID-19 barreled their way through the Adriatic, locals took to the waters to let them know big boats weren’t welcome. Tiny watercraft swarmed their giant adversary, oblivious passengers gathered at heights above to see how unwelcome their method and means of transportation were in their next destination.

The protests worked–the government listened and banned everything over 25,000 tons or taller than 180 meters.

What a beautiful moment when a country put the needs of locals and the environment at the forefront.

Now for a few photos I took several years back to appreciate the architectural and cultural…

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