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natita [175]
3 years ago
13

We can acquire new behaviors without direct exposure to contingencies through _______.

Biology
1 answer:
Leviafan [203]3 years ago
3 0
The best answer here is C. 
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When a family faces a situation that is too hard to solve by itself, it is a sign of strength to _____. (1 point) ask for help n
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Why does every one have cells
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<span>Everyone has cells because these are the building blocks of life. These tiny particles that clump into groups that form tissues, organs, and organ systems are what makes organisms distinct from non-living things that exist on Earth. Where there are cells, life is present, and in its absence life cannot exist as we know of today. Cells are responsible for bringing different species of organisms that are found in different ecosystems all over Earth. They are tiny but in groups they are responsible for every living organisms that have existed through time.  </span>
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3 years ago
Explain how fertilization occurs
alex41 [277]
<span>I'm assuming this in plants.

Brief-ish answer:

"Fertilization in plants occurs when pollen grains are transported from anthers to stigma. When ripe pollen from an anther catches on the stigma of the same kind of flower, each pollen grain sends out a small thread-like tube."

Here's a fuller answer:

"</span>Fertilization occurs after pollination, when pollen grains land on the stigma of a flower of the same species. During this time, a series of events take place leading to the formation of seeds. A pollen grain on the stigma develops a tiny tube that runs down the style of the ovary. The pollen tube contains a male gamete which meets the female gamete in the ovule. Fertilization occurs when the two gametes combine and their chromosomes join. The resulting product is a normal complement of chromosomes, with some from either parent flower. The fertilized ovule forms a seed, which consists of a food reservoir and an embryo that later develops into a new plant. In gymnosperms (conifers) male gametes are enclosed in pollen grains and are transmitted by wind or insects to the female reproductive organs. Fertilization in angiosperms (flowering plants) occurs when insects or other animals transport the pollen to the female reproductive organ (pistil).<span>
</span><span>Fertilization is the fusion of gametes to launch the development of a new individual organism. In animals, the process entails the combination of ovum with a sperm, leading to the development of an embryo. Fertilization in plants occurs when haploid gametes meet to create a diploid zygote, which eventually forms an embryo.</span><span>"

source: </span>https://www.reference.com/science/plant-fertilization-occur-ccf48c80e72fc410
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3 years ago
Why is the presence of only 2 adult female wolves of such concern to isle royale scientists?
Lesechka [4]
Since two females are unable to reproduce. Therefore, if only two females are still alive, the species will become extinct.
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