Answer:
yes with sunlight (which is a heat source)
Explanation:
Answer:
1. Meiosis I
2. Tetrad
3. Tetrad
Explanation:
Crossing over refers to an event taking place in the cells undergoing meiosis cell division during which the exchange of material takes place. The process of crossing over takes place during pachytene of prophase I in meiosis I.
Crossing over takes place when the structure formed by the pairing of the four chromatids of the chromosomes called tetrad is formed. The formation of tetrad allows the exchange of genetic sequences, therefore, result in recombination.
The process of crossing over does not take place in the mitosis as the tetrad is not formed in the mitosis.
Thus, Meiosis I, Tetrad and tetrad are correct.
Answer:
C)The density of an object determines weather it will sink or float
Explanation:
Answer:
1- Two tectonic plates separate as they are pulled apart by convection in the mantle.
2- Molten material from the mantle rises up towards the surface due to convection and fills in the rift.
3- New oceanic crust is formed.
4- The crust slowly moves away from the ridge equally on either side.
5- Overtime, the creation of oceanic crust will cause continents to move.
Explanation:
Oceanic plates get separated and the spaces left among them are filled with magma coming from the mantle. When the magma reaches the surface, it suffers physical and chemical changes at the moment it gets in touch with the cold ocean water. The magma temperature descends and turns into a new oceanic crust. Plates keep separating from each other, and the new oceanic crust moves forward each side of the crest making a place for the ascension of new fluid hot material from the mantle. This constant process is what makes the continents eventually get separated each time more.
