A physical change is a change is a substance that does not change what the substance is. In contrast, in chemical change a new substance is formed. 

Let's look at our options:

When wood is burned, the wood turns into ash. We can't get the piece of wood back once it's been burned; thus, wood burning is a chemical change. 

When a cake is baked, the ingredients combine and turn into a cake once it's baked. Once we have a cake, we can't get the ingredients back; thus, baking a cake is a chemical change. 

When a nail rusts, pieces of the metal nail have turned into rust. We can't get the original nail back; thus, a nail rusting is a chemical change. 

Cutting a piece of wood does not change the wood, it's still a piece of wood, just smaller; thus, cutting a piece of wood is a physical change. 

A physical change is a change is a substance that does not change what the substance is. In contrast, in chemical change a new substance is formed. 

Let's look at our options:

Ice is made up of water, and when the ice melts we are left with a puddle of water. If we freeze the water, it will turn back into ice; thus, melting ice is a physical change. 

Cutting a piece of wood does not change the wood, it's still a piece of wood, just smaller; thus, cutting a piece of wood is a physical change. 

Butter melting is similar to ice melting. When butter melts, it can be frozen back to butter; thus, butter melting is a physical change. 

When wood is burned, the wood turns into ash. We can't get the piece of wood back once it's been burned; thus, wood burning is a chemical change. 

Air is vital to a plant's growth and survival. Plants take in carbon dioxide from the air and convert it into glucose through the process of photosynthesis, which is powered by sunlight. Without air, plants would not be able to create glucose and would die. They must have access to carbon dioxide to survive.

Water is one of just a few things plants need to survive. Water supports the transportation of nutrients, from the soil up into the structures of the plant, is used in the process of photosynthesis, helps keep plants standing stiff and upright and not wilted or droopy, and water helps keep plants cool as it evaporates from the leaves. If plants do not have access to water, they will not absorb the nutrients needed to grow.

Sophia is correct in the argument about a plant's needs for survival. Plants take in carbon dioxide from the air and convert it into glucose through the process of photosynthesis, which is powered by sunlight. Water supports the transportation of nutrients, from the soil up into the structures of the plant, is used in the process of photosynthesis, helps keep plants standing stiff and upright and not wilted or droopy, and water helps keep plants cool as it evaporates from the leaves. Water and air are vital to a plant's growth and survival.

The statement provided is true. Plants need sunlight for the process of photosynthesis but the materials they need for growth primarily come from water and air. Plants take in carbon dioxide from the air and convert it into glucose through the process of photosynthesis, which is powered by sunlight. Water supports the transportation of nutrients, from the soil up into the structures of the plant, is used in the process of photosynthesis, helps keep plants standing stiff and upright and not wilted or droopy, and water helps keep plants cool as it evaporates from the leaves.

Water, air, and sunlight are the most important things that a plant needs for growth. Plants take in carbon dioxide from the air and convert it into glucose through the process of photosynthesis, which is powered by sunlight. Water supports the transportation of nutrients, from the soil up into the structures of the plant, is used in the process of photosynthesis, helps keep plants standing stiff and upright and not wilted or droopy, and water helps keep plants cool as it evaporates from the leaves. Soil is not necessary if the water is nutrient-rich.

The statement "For a seed to germinate, it must receive an adequate amount of water." is true. The seed is a small part of a plant and contains the embryo, a tiny new plant. If this seed has the right conditions, including an adequate amount of water, it will germinate, and a new plant will sprout. Without water, the seed will not grow, and no new plants will form.

Humans and animals take in water by drinking it with their mouths. Plants need water but do not have the same structures or parts as humans and animals. The roots of a plant absorb moisture from the soil to hydrate the plant. If the roots are damaged and cannot absorb water, the plant will not survive.

In photosynthesis, plants take in carbon dioxide from the air and combine it with water absorbed through their roots. They use energy from sunlight to turn these ingredients into carbohydrates (sugars) and oxygen, and they release extra oxygen to the air. Plants need oxygen to survive, and plant cells are continually using oxygen. Respiration in plants is the process of cells releasing energy for their use by breaking down sugars and using up oxygen. Plants need oxygen for the two functions to run efficiently.