Answer:
The correct answer is 8 g.
Explanation:
During a physical change, the identity of the substance <u>does not change, because no chemical reaction occurs</u>. So, after the change, the amount of substance is still the same. Examples of physical changes are changes in the state of matter (solid-liquid-gas). If 8 grams of ice (water in the solid-state) are melted, after the melting process we will have 8 grams of water in the liquid-state, but still 8 grams of water.
Answer:
Guard cells
Explanation:
Guard cells are can be described as a special group of plant cells that are located or can be found in the epidermis of plants. They come in the shape of a kidney.
They help to control the rate at which air moves in and out of the plant, the is achieved by periodically opening the stoma and blocking it back. They are also responsible for the regulation of water movement in and out of the plant.
This essential material in which the guard cell regulates/ control is an important part of plant photosynthesis, therefore they play an important role in the process through which plants manufacture their food.
Answer:
c small intestine
Explanation:
it absorbs 90% of water in our system
Neutral carbon-12 (or any carbon atom) has 6 electrons with a total negative charge of 6e- orbiting a nucleus with a total positive charge of 6e+, so that the total net charge is zero. The nucleus is made up of 6 protons, each with a positive charge of e+, and 6 neutrons, each with zero charge.
