1.C | 2.D | 3.B | 4.D
---
1. The point in the Moon's orbit when it's farthest away from the Earth is called apogee. On the contrary, the perigee is the point in the Moon's orbit when it's the nearest from the Earth. Those points are very important for tides and other natural phenomenon such as eclipse and in general for the observation of the skies.
---
2. Gamma rays are a type of electromagnetic radiation cannot be focused. They diffuse from the emission points until there is an object that stops them. This is the reason why when you have to use gamma rays, you are in other rooms, in order to prevent the radiation to go through them.
---
3. The corona it's the outermost layer of the Sun's atmosphere. It's also the part where most of the activity of the sun that we can see take places. It's a subject that has fascinating scientists for centuries and only recently we are studying in more details this interesting and weird place, due to the advancement of technology.
---
4. Tides are a result of the gravitational attraction of the Sun and Moon. The Earth, the Sun and the Moon have masses and their own gravities. The interactions between these corps causes tides movement on Earth that are fundament to life on the planet, because they are a fundamental part in the cycle of water and air.
Answer:
E. All the answer options are correct.
Explanation:
Cilia are very small hair-like, membrane-bound cell structures. They are present on the surface of many eukaryotic cells. They are made of microtubules and are continuous with the plasma membrane of a cell. On a single cell, they are present in large numbers as compared to flagella. The major function of cilia is to move the cell or to move substances such as mucous, fluid over or around the cell.
Mitochondria and chloroplasts because m<span>itochondria helps in breaking down glucose and chloroplasts help in converting the light energy into chemical energy.</span>
Answer:
Temporal separation
Explanation:
A form of prezygotic reproductive barrier is temporal separation or temporal Isolation. Temporal isolation stands for 'isolated in time,' that is to say, species mates at different times probably the time of the day, season or different years, even though they are closely related or live in the same habitat.
Another example is the American toad and the Fowler's toad. Both are closely related species with distinct copulation peridods. The American toad copulates during early summer and the other at lat summer.
