Answer:
paracrine signaling.
Explanation:
Chemical signaling between cells is one of the most important ways that activities of tissues and organs are coordinated. The nervous system is the other major coordinating system in animals, but even here chemical signaling is used between adjacent neurons. The mechanisms involved are described as either being paracrine, autocrine, intracrine, endocrine, neuroendocrine or pheromones. Paracrine signals diffuse locally and act on neighboring cells.
Answer:
The Sun
Explanation:
The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers, such as plants and algae, use energy from sunlight to make food energy by combining carbon dioxide and water to form organic matter. This process begins the flow of energy through almost all food webs.
It is the second option
Gg symbolises green color(because G is dominant so it will be green) and GG symbolises yellow( as there is no dominant trait present)
In the<em> </em><u><em>fall,</em></u> a tree's will change color and fall off. Later in the<em> </em><u><em>winter,</em></u> the tree will not have any leaves and will be dormant. Soon the seasons change again. In the <u><em>spring,</em></u> leaves will start to grow back, and flowers will bloom. In the <u><em>summer,</em></u> leaves will stay full and green.
