Answer:
Theres no nucleus and what makes it a nucleus is the nuclear membrane. So the answer is the presence of a nuclear membrane.
B. It's less dense. Ice floats<span> because it is about 9% less dense than liquid water.</span>
Answer:
1. ecology: e)the study of the relationship among organisms and the relationship between organisms and their environment.
2. Aristotle: g)an ecologist who developed classification system fro plants and animals.
3. environment: i) physical and biological surroundings of an organism.
4. cell: j) the basic unit of life.
5. Schleiden and Schwann: l) proved that cells are formed from the division of cells that already exist.
6.
7: ecosystem: i) physical and biological surrounding of an organism.
8: organism: k) any unicellular or multicellular organism.
9: biomes: c) land proportions of the ecosystem. e.g desert and tundra.
10: species: f) group or population of organisms that interbreed.
11: biosphere: h) the variety of species in different habitats on earth.
12: population: d) group of the same species living together in a certain location or region.
13: mutation:
14: Charles Darwin: b) proposed theory of natural selection.
15: species diversity: a) adaptability through random changes in the DNA.
I would like to talk about a birthday celebration that I attended 2/3 months ago. It was one of my friends' birthday who turned 25 that day. My friend's name is Ryan and his parents wanted to celebrate his birthday just before his departure to United Kingdom. Ryan invited almost all of his close friends and 6-7 of us attended the birthday celebration together. Apart from us, there were as many as 100 other people present on the occasion. I did not know most of them but my guess is that they would be mostly Ryan's relatives, neighbors and his father's colleagues.
The party was celebrated at my friend's house at tohana. We went there together and bought a present for the Ryan. After reaching there, Ryan and his parents warmly welcomed us. Later Ryan introduced us to his relatives and to some of his neighbors. We were astonished when we saw the huge birthday cake. 25 candles of different colors were lit around the cake and the whole house was redecorated for the occasion. Anybody could say that some occasion was going on in this house without knowing anything.
We sang the birthday song when Ryan cut the cake. We congratulated him and wished him a prosperous life ahead. Then we ate cake and had a good feast. The foods were delicious and good. We, friends of our circle, went to visit a nearby place and sang different songs. In the evening we went to Ryan's house again and attended a raffle draw. That was a very exciting part of the birthday celebration. Then after few minutes we left the party and went our homes.
Answer: The troposphere.
It contains half of the earths atmosphere. Weather occurs in this layer.
