Explanation

Adrenaline (also known as epinephrine) increases the following effects on the heart:

Heart Rate:

Adrenaline increases the heart rate (positive chronotropic effect).

Contractility:

It increases the force of heart muscle contractions (positive inotropic effect).

Conduction Velocity:

It enhances the speed of electrical conduction through the heart (positive dromotropic effect).

Cardiac Output: 

Due to the increased heart rate and contractility, adrenaline boosts the overall cardiac output.

Explanation

Influenza is also known as the flu.

It is a contagious respiratory illness caused by the influenza virus.

It affects the nose, throat, and lungs, and can range from mild to severe.

Explanation

• Air pollution is actually considered the most dangerous type of pollution.
• According to the World Health Organization (WHO), air pollution is responsible for an estimated 7 million premature deaths worldwide each year, mainly due to heart disease, stroke, and lung cancer.

Explanation

• Deserts are areas with very low rainfall, typically less than 25 centimeters (10 inches) per year.
• It resulting in a barren and often sandy landscape with limited vegetation and wildlife.

Explanation

• Reproduction is the process by which living organisms increase their numbers.
• Either sexually or asexually, to produce offspring and ensure the continuation of their species.

Explanation

• Aerobic respiration is the process of cellular respiration that uses oxygen (O2) to generate energy from glucose.
• It is the primary method of energy production in humans and other animals, and it produces carbon dioxide and water as byproducts.

Explanation

Almost all organs are completely formed by about 10 weeks after fertilization (which equals 12 weeks of pregnancy).

The exceptions are the brain and spinal cord, which continue to form and develop throughout pregnancy.

Most malformations (birth defects) occur during the period when organs are forming.

Explanation

• Photosynthesis requires two main materials: Water (H2O) and Carbon Dioxide (CO2), in addition to Light Energy.
• Water is the source of hydrogen atoms, which are used to synthesize glucose and other organic compounds.
• While Carbon Dioxide provides the carbon atoms.

Explanation

• Chlorophyll is a green pigment found in plants, algae, and cyanobacteria that plays a crucial role in photosynthesis.
• It traps sunlight and uses the energy to convert carbon dioxide and water into glucose and oxygen.

Explanation

• Yeast fermentation converts sugars into carbon dioxide gas and ethanol.
• It causing the dough to rise.