**Recognizing the Difference between Chemical and Physical Changes: Physical changes: A change in size, condition, or appearance. Chemical changes: include the creation of new chemicals, color shifts, gas production, and the release or absorption of energy. Reversibility: Physical changes: Mostly reversible. Chemical changes: Usually irreversible. Changes in Energy: Physical Changes: They don’t always necessitate a change in the system’s internal energy, but they may include energy changes. Chemical Changes: Include notable energy shifts. **

Assignment made to assist students in comprehending, examining, and analyzing the numerous elements and interactions that make up an ecosystem.

The heart is the pump responsible for maintaining adequate circulation of oxygenated blood around the vascular network of the body. It is a four-chamber pump, with the right side receiving deoxygenated blood from the body at low presure and pumping it to the lungs (the pulmonary circulation) and the left side receiving oxygenated blood from the lungs and pumping it at high pressure around the body (the systemic circulation).

This is a magnetism worksheet based on practical problems related to magnetism and magnetic lines of forces to reinforce basic concept learnt in the lesson.

Genetics is the discipline of learning how living things pass on characteristics (or traits) and its differences in their cell make-up from one generation to the other like eye-color, nose shape, height and likewise behaviors from their parentage or ancestors The technique in which traits are passed from one generation to the next-and sometimes skip generations-was first explained by Gregor Mendel. By experimenting with pea plant propagation, Mendel developed three principles of inheritance that described the transmission of genetic traits, before anyone discerned that genes existed. Mendel’s insight significantly expanded the understanding of genetic inheritance,and led to the development of new experimental procedures.

All living organisms guzzle food to produce energy for the consistent working of the body. This is precisely what we do through the method of respiration. Respiration is the natural process through which all the cells of living organisms acquire the energy to accomplish certain life processes that are crucial for existence. Glucose from the food that the animals ingest, gets fragmented down into simpler elements and energy is released. As respiration takes place in the cells of organisms, it is called cellular respiration.

The cell cycle is an ordered set of events, culminating in cell growth and division into two daughter cell.Cell division and tissue growth is a controlled and complex process. Cancer is a disease where regulation of the cell cycle goes messy and normal cell growth and behavior is lost.

**Stimuli are any changes in an organism’s environment that cause a response. A plant can respond to stimuli in many ways.** External stimuli – light, touch and gravity Internal stimuli – hormones(inside a plant) Plant growth towards or away from an external stimulus is called tropism .

**There are two process in plants, to get their food and to get their energy for growth, repair, movement and other life process. Photosynthesis – (plants make food) Cellular respiration – (plants get energy)

An adaptation is an inherited trait that helps a species survive in its environment. Variations are slight difference in inherited traits among individual members of a species. How adaptations occur? Types of adaptations