Notes, summaries, assignments, exams, and problems for Baccalaureate

Mamíferos: Las hembras tienen mamas que producen leche para alimentar a las crías, el cuerpo está cubierto por pelos. La función principal es proteger del frio al animal.
Pelaje: raíz dentro del funículo piloso .Los pelos nuevos sacan los pelos viejos. La glándula sebácea lo hace más flexible el pelo. Lana (largo y fino), cerda (áspero y grueso), vello (suave y corto) y púa (largo y puntiagudo)
La temperatura: Es constante. Si sube o baja la temperatura siempre se mantiene constante.
Hibernación: desciende -10 Cº / Duerme no come y se esconde.
Invernación: baja la temperatura pero un duerme profundamente, come y hace algunas actividades.
La fecundación interna se produce en el ovulo con el esperma.
Sistema digestivo: Boca -faringe-

System Types
The systems of equations can be classified by the number of solutions that can arise. According to that case may have the following cases:
· Incompatible system if it has no solution.
· Compatible system if you have any solution in this case can also distinguish between:
or compatible system determined when it has a finite number of solutions.
indeterminate or compatible system when it admits an infinite set of solutions.
Fitting and classification:

Calculating the rank of a matrix for determining

1. We can rule a line if:.
· All the coefficients are zeros.
· There are two equal lines.
• A line is proportional to another.
• A line is a linear combination of others.
Delete the third column because it is a linear... Continue reading "Matrices: multiplication, rank, determinant, inverse and Rouche-Frobenius theorem" »

Part 1: Vocabulary and Grammar Practice

Exercise 1

• 1. People / Shoppers
• 2. Floors
• 3. Poorer
• 4. Bank
• 5. Traffic jam
• 6. Window
• 7. Street

Exercise 2

• 1. d
• 2. c
• 3. e
• 4. b
• 5. a

• 1. Access to
• 2. Reason for
• 3. Lack of
• 4. Along with
• 5. Break from

Exercise 3

• 1. Housing
• 2. Lack of
• 3. Abandoned
• 4. Suburbs
• 5. Neighbourhoods
• 6. Built-up
• 7. Room for
• 8. Solution to

Exercise 4

• 1. Will hold
• 2. Have increased
• 3. Will have brought
• 4. Should be emptied
• 5. Was believed
• 6. Will be demolished
• 7. Have been banned
• 8. Haven't been found
• 9. Has turned down

Exercise 5

• 1. Free parking spaces in town should be given to locals.
• 2. Have the city's historic landmarks been shown to the tourists?
• 3. City life is thought to be too stressful by many.

Exercise 6

• 1. Had / got its logo designed by a local artist
• 2. Is believed

Grammar, Vocabulary, and Functional Language Practice

1. Choosing the Correct Past Tense Form

Choose the correct verb form to complete the sentences.

1. We drove / were driving to work when the accident happened.
2. There was a new woman at work today who I didn't meet / hadn't met before.
3. I was trying to repair my bike when a man was stopping / stopped to help me.
4. The parcel had arrived / arrived just after I got home.
5. When I tried to use my phone, I realised it hadn't worked / wasn't working.
6. He ate / had eaten already so he was cooking just for the children.

2. Past Simple or Present Perfect

Complete the sentences with the past simple or present perfect form of the verbs in brackets.

1. She has never studied (never / study) Turkish before. This is her first

Causes of the Decline of the Mughal Empire

The decline of the Mughal Empire was a complex process resulting from a combination of political, economic, administrative, military, and social factors that unfolded primarily after the death of Aurangzeb in 1707. The causes can be broadly categorized as follows (relevant for BA 3rd semester examination answers):

I. Political and Administrative Factors

• Weak Successors: Aurangzeb's death was followed by a series of weak, inefficient, and short-reigning emperors who were unable to maintain control over the vast empire. They often became puppets in the hands of powerful nobles.
• Wars of Succession: The absence of a fixed law of succession (primogeniture) led to frequent and destructive wars among the royal

Cultural Acceptance of White Lies

In my society, telling small lies is often accepted and even expected in daily interactions. People commonly use “white lies” to avoid hurting others’ feelings or to be polite. For example, it’s typical to compliment someone’s cooking even if you didn’t enjoy it, simply to be respectful.

While constant lying is frowned upon, these social lies are seen as necessary to maintain harmony. I believe this is generally a good thing—telling the absolute truth can sometimes cause unnecessary pain. As long as the intention behind the lie is kind, I think it plays a useful role in communication and relationships.

Graffiti: Art Form or Act of Vandalism?

Graffiti has long sparked debate. Some see it as vandalism,... Continue reading "Social Ethics, Urban Art Debate, and Professional Writing Examples" »

Memories of a Wonderful Summer Vacation

Last summer, I had a wonderful holiday. When school finished, I was very happy because I could finally rest and have fun. I prioritized spending quality time with my family and friends.

Beach Days and Mountain Retreats

I went to the beach many times with my friends. Our activities included:

• Swimming in the sea.
• Playing volleyball.
• Eating delicious ice cream.

For one week, I traveled with my family to the mountains. We stayed in a small house. Every day, we walked and saw beautiful places. At night, we made a fire, told stories, and watched the stars. I truly enjoyed the fresh air and the quiet atmosphere.

When I came back home, I visited my grandparents and helped them in their garden. I felt happy and relaxed.... Continue reading "Reflections on Life: Childhood Memories and Future Career Goals" »

Metallurgical sample preparation for microscopy is a crucial step in analyzing the microstructure and properties of metallic materials. Proper sample preparation is essential to obtain accurate and meaningful results. The process involves several key steps:

1. Sample Selection for Microscopy

Choose a representative portion of the material to be analyzed. Ensure that the sample is free from external contaminants and has a flat surface for preparation.

2. Precision Cutting Techniques

Use a precision cutting method to obtain a small section of the material for analysis. Common cutting techniques include abrasive cutting (using a saw with abrasive blades), wire cutting, or electrical discharge machining (EDM) for hard materials.

3. Sample Mounting for

Identifying Common Logical Fallacies

Introduction to Global Governance

What is governance? The concept of governance has evolved, reflecting new processes and methods by which society is organized. According to Rhodes (2012), "Governance implies a change in the meaning of government, referring to new governing processes, changing order and rules, or new methods by which society is organized." Similarly, Mark Bevir (2012) states, "Governance encompasses all governing processes, whether carried out by a government, market, or network, at different levels and through tools such as laws, norms, power, or language. Governance differs from government by focusing less on the state and more on social practices."

The Evolution of Global Threats: Pandemic Responses

Global threats, such as... Continue reading "Global Governance Evolution: Pandemics, Wars, and Economic Shifts" »