Which of the following would you identify as a correctly written problem statement if your topic was about the negative affects
surrounding human and dolphin interaction? A) Do humans like to swim with dolphins?
B) Is there a connection between dolphin propeller injuries and humans feeding dolphins?
C) Are dolphins a marine mammal?
D) In what parts of the world do dolphins live?
Los dos tipos de cambios que experimentan las sustancias en la química son cambios químicos y físicos.
Un cambio físico es un cambio es un cambio en el que la sustancia cambia en su apariencia o su forma de una manera que es reversible y en la que no se forma una nueva sustancia.
Un cambio químico es aquel en el que hay un cambio en las sustancias presentes y se forma una nueva sustancia.
La evidencia de que ha tenido lugar un cambio químico incluye
1) La formación de un precipitado a partir de la mezcla de sustancias.
2) Un cambio en el color de las sustancias.
3) Un cambio en el olfato (que desprende un olor) o en el sabor.
4) La sustancia produce luz (brilla)
5) El volumen total cambia
6) Cambio de temperatura (la mezcla se calienta o enfría)
Por lo tanto, la presencia de un catalizador, que es una sustancia que no participa en una reacción pero aumenta la velocidad de reacción, no es evidencia de una reacción química.
The correct answer would be - C. He is monitoring oxygen. The amount of gas released should be highest for the plant closest to the window and lowest for the plant farthest away from the window.
Explanation:
The release of the oxygen gas in the process of photosynthesis depends on the rate of photosynthesis which depends on various factors such as carbon dioxide, light, and water. In this experiment air (carbon dioxide), water is constant only factors that are changed is light, and an increase in the light energy increase the rate of photosynthesis, and a decrease in the intensity of light depend decreases the rate of photosynthesis.
Thus any change in the light would affect the release of the oxygen gas which is measured through this experiment and gas released should be lowest for the plant farthest away from the windowand highest for the plant closest to the window.
Hello! I'm did a unit similar to this! I believe the order is Plant Grasshopper Mouse Snake Hawk The plant is at the bottom of the food chain, because it provides energy, or nutrients, for other small organisms such as a grasshopper. The same goes for the grasshopper and the mouse, the mouse and the snake, and it keeps going till the hawk. The plant is considered a primary producer, because it provides energy for the grasshopper. However, the hawk is at the top of the food chain, because he is predator. In a way, he can be considered a producer for much bigger animals, but in this case, the hawk is at the top of this chain because he is the main predator in this situation. <span> </span> I hope this helps in some way!! Also if you have any other questions let me know! Biology is my FAVORITE subject, and I have multiple notes on this subject! XD
