⚫Absorption of water by a sponge is an example of a physical change.
⏩The given change (absorption of water by a sponge) is generally considered to be reversible because the absorbed water can be squeezed or evaporated out of the sponge, returning it to its original state.
Absorption of water by a sponge is an example of a reversible change.
Changes can be categorized as either reversible or irreversible. Reversible changes are those that can be undone or reversed, meaning the original state can be restored. On the other hand, irreversible changes are permanent and cannot be reversed to the original state.
Absorption of water by a sponge is an example of a reversible change. When a dry sponge comes into contact with water, it absorbs the water and expands. However, if the sponge is squeezed or left to dry, it releases the water and returns to its original state.
Learn more about reversibility of changes here:
#SPJ14
Genetically altered crops are unable to reproduce.
Genetically altered crops produce less carbon dioxide.
Genetically altered crops require less pesticide.
Genetically altered crops are more delicious.
The correct answer is (C) Genetically modified crops requires less pesticide.
The genetically modified crops are designed in such a way that it requires less amount of pesticide. These plants contain the gene resistant for pest. These plants are often called as Bt plants. Almost 40% of the maize crops used in United States are genetically modified crops. All these are pest resistant and require very small amount of pesticide to kill some of the pest.
Energy flow is the amount of energy that moves through a food chain.
of energy flow in an ecosystem would begin with the autotrophs that take energy from the sun. Herbivores then feed on the autotrophs and change the energy from the plant into energy that they can use.
B. Continental drift
C. Magnetic reversal
D. Magnetic minerals
E. Fossils
Answer;
-Sea-floor spreading
Sea floor spreading is process that takes place at mid-ocean ridges, evidence is found in magnetic minerals on the ocean floor.
Explanation;
-Seafloor spreading is a geologic process in which tectonic plates; large slabs of Earth's lithosphere; split apart from each other.
-Seafloor spreading and other tectonic activity processes are the result of mantle convection. Mantle convection is the slow, churning motion of Earth’s mantle. Seafloor spreading occurs at divergent plate boundaries. As tectonic plates slowly move away from each other, heat from the mantle’s convection currents makes the crust more plastic and less dense.