Las características sexuales primarias y secundarias se refieren a rasgos físicos específicos que diferencian a machos y hembras en especies sexualmente dimórficas; Es decir, especies en las que los machos y hembras se ven diferentes. Las características sexuales primarias están allí desde el nacimiento (por ejemplo, penes vs. vaginas). Las características sexuales secundarias surgen en la pubertad (como las voces bajas y las barbas en los hombres, las voces altas y el pelo facial en las mujeres).
Answer:
B. Once the specimen is in focus under a low power lens, the microscope can be switched to a higher power lens without moving the stage and the image will be in or nearly in focus no matter what lens is used.
Explanation:
1) Identify the problem
2) Design a solution or product
3) Implement the design
4) Evaluate the product/solution
First start with making observations, and decide on the problem. You want to generate ideas, look and decide your limits, then create a solution or product. Then, build your product/solution, and put it to the test. Did it work? Identify the pros and cons of your product/solution, and decide what you could do better to improve your design.
Answer:
Geotropism guides plant roots to grown downward, or if growing horizontally in shallow topsoil, to occasionally branch and send some roots vertically downward. This creates structural anchorage and integrity of the plant, especially once upright stems and leaves occu
Answer:
It's the leaf, or it is called chloroplasts.
Explanation: