Answer:
Tracheids and vessels are two water conducting hollow tubes present in the vascular tissue called is xylem. Xylem in a plant is responsible for transporting water from the roots to other parts of the plant.
Answer:
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Answer:
The term living thing refers to things that are now or once were alive. A non-living thing is anything that was never alive. In order for something to be classified as living, it must grow and develop, use energy, reproduce, be made of cells, respond to its environment, and adapt.
Acetylcholine is the neurotransmitter that sends signals along synapses which will keep creating action potentials in nerves so that signals are passed to the muscle cells (effectors)
Answer:
Option d ; energy
Explanation:
Energy is the main component of life. From simple processes such as photosynthesis, to the production of plants, to reproduction in mammalian life, all depend on the life-driving force of energy.
In the bear's life, the energy is needed for cellular processes like respiration, particularly the Krebs Cycle. Not only that, because bears live in polar regions, they need heat to keep them warm. Without energy, they will not be able to move, hunt or sustain themselves.
