Answer: a) applied force
Explanation: the student is applying force onto the desk when they push it.
When forests have been cut down, new native trees can be planted
Answer: The correct statements are 1 and 2:
1.Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant.
2.Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.
Explanation:
Pollination is the transfer of pollen grains from an anthers to a receptive stigma. In most species of flowering plants, external agents bring about pollination. Also, flowers have evolved special structures and mechanisms to ensure successful pollination.
There are two types of pollination
--> Self pollination: This takes place when mature pollen grains from the anther of a flower fall on the stigma of the same flower or that of another flower on the same plant. This type of pollination brings the male gametes and egg cells of the same plant together. The resultant offspring show very little genetic variation.
--> Cross pollination: This occurs when mature pollen grains of a flower are transferred to the stigma of a flower of another plant of the same or closely related species. This brings the male gametes and egg cells of two different parent plants together. Therefore, there is greater genetic variation among the offspring.
The position of the eyes of a Macaw are as follows. Each eye is located on either side of the birds head. This is called Monocular vision, opposed to our eyes which are located in front of our head, adjacent to each other. Mono comes from the Greek root word meaning 'alone'. Making it understandable that, that type of vision is more limited. The operation of their eyes, view things differently in comparison to that of binocular vision (what we humans have). They have a more broad view but cannot judge distance or depth very well.
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