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AlekseyPX
3 years ago
7

Formation of sperm cells​

Biology
1 answer:
statuscvo [17]3 years ago
5 0

Answer:

Spermatogenesis takes place in the seminiferous tubules, which are an intricate system of tubules in the testes where spermatogenesis takes place. ... A sperm cell lashes its flagellum back and forth to propel the sperm forward.

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Environmental science please help
goldfiish [28.3K]

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.

8 0
3 years ago
Many present-day animal phyla appeared suddenly in fossils formed 535-525 million years ago, during the paleozoic era of the pha
frez [133]

The correct answer is - No.

The Cambrian explosion is a term used for the big and rapid diversification of the animal species, but it is not the period in which the animal life started. The animal life started in the period between 620 and 550 million years ago, in what is known as the Vendian Period. In the Vendian Period, the first complex animal organisms appeared, started to develop and evolve, though it is not a period where there was a high diversification of the species. The later Cambrian Period provided better living conditions, and that resulted in a so called ''explosion of life'', which resulted in much more new species developing and evolving.

8 0
3 years ago
imagine you are a detective examining a crime scene. you are trying to identify the person who commited the crime, so you collec
kvasek [131]

Answer:

I think a finger print.

8 0
4 years ago
The first hominids to create sculptures, carvings, and paintings​
Alecsey [184]

Answer:

NeanderthalsThese artistic innovators were probably Neanderthals. Dated to 65,000 years ago, the cave paintings and shell beads are the first works of art dated to the time of Neanderthals, and they include the oldest cave art ever found

Explanation:

Which hominids created art? The first human artist on Earth is believed to have drew on a cave wall with red ochre over 65,000 years ago, as a Neanderthal reached out and drew on it. There is no evidence that the modern human is the only species to express itself through art, as is widely believed.

3 0
2 years ago
*WILL GIVE BRAINLIEST+100 POINTS* i need a Model describing the carbon cycle
Andrew [12]
The carbon cycle describes the process in which carbon atoms continually travel from the atmosphere to the Earth and then back into the atmosphere. Carbon is released back into the atmosphere when organisms die, volcanoes erupt, fires blaze, fossil fuels are burned, and through a variety of other mechanisms.
8 0
3 years ago
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