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kogti [31]
3 years ago
7

By 1900, the world had over two billion inhabitants

Biology
1 answer:
Usimov [2.4K]3 years ago
7 0

Answer:

what is the question

Explanation:

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During the Devonian period of Gondwanaland what were the two organisms that thrived?
gulaghasi [49]

Answer:

about the Trilobites is =Trilobites ( /ˈtraɪləˌbaɪt, ˈtrɪ-, -loʊ-/;[4][5] meaning "three lobes") are a group of extinct marine artiopodan arthropods that form the class Trilobita. Trilobites form one of the earliest-known groups of arthropods. The first appearance of trilobites in the fossil record defines the base of the Atdabanian stage of the Early Cambrian period (521 million years ago), and they flourished throughout the lower Paleozoic before slipping into a long decline, when, during the Devonian, all trilobite orders except the Proetida died out. The last extant trilobites finally disappeared in the mass extinction at the end of the Permian about 252 million years ago. Trilobites were among the most successful of all early animals, existing in oceans for almost 300 million years.[6] . and about the algae is =Algae (/ˈældʒi, ˈælɡi/; singular alga /ˈælɡə/) is an informal term for a large and diverse group of photosynthetic eukaryotic organisms. It is a polyphyletic grouping that includes species from multiple distinct clades. Included organisms range from unicellular microalgae, such as Chlorella and the diatoms, to multicellular forms, such as the giant kelp, a large brown alga which may grow up to 50 metres (160 ft) in length. Most are aquatic and autotrophic and lack many of the distinct cell and tissue types, such as stomata, xylem and phloem, which are found in land plants. The largest and most complex marine algae are called seaweeds, while the most complex freshwater forms are the Charophyta, a division of green algae which includes, for example, Spirogyra and stoneworts.

Explanation:

5 0
2 years ago
In rats, the allele for long whiskers is dominant to the allele for short whiskers. At another gene locus, a dominant allele pro
PilotLPTM [1.2K]

Answer:

25%

Explanation:

We have 2 independent genes with 2 alleles each: L/l and W/w

  • W_: whiskers
  • ww: no whiskers
  • L_: long whiskers
  • ll: short wiskers

Individuals with short whiskers will have the genotype <em>WWll </em>or <em>Wwll</em>.

<u>A cross between a rat heterozygous for both genes and a homozygous recessive rat is done:</u>

<h3>WwLl x wwll</h3>

-The homozygous rat will produce only <em>wl </em>gametes.

-The heterozygous rat will produce the following gametes: <em>WL</em>, <em>Wl</em>, <em>wL</em>, <em>wl</em>.

If you do a Punnett Square, you'll get that 25% of the offspring will be WwLl and will have short whiskers.

3 0
2 years ago
Moldy bread! Where did that come from? Moldy bread indicates that a fungus is growing in and on your bread. But how did it get t
mestny [16]
The answer is (B) Mold spores are in the air around us. Settled on the bread when it was unwrapped.
3 0
2 years ago
Read 2 more answers
While observing reproductive stages of bacterial cells, a bridge-like connection between two bacterial cells was noticed.. Which
Jlenok [28]
Answer: B. conjugation

Conjugation is the reproductive stage of bacterial cells wherein a bridge-like structure is form between two bacterial cells that allows the transfer or the transport of genetic material from one cell to the other cell in the form of a plasmid.
6 0
3 years ago
Would a large hyena population exist?
andrew11 [14]

Answer:

No

Explanation:

The spotted hyena (Crocuta crocuta Erxleben) and the lion (Panthera leo Linnaeus) are two of the most abundant and charismatic large mammalian carnivores in Africa and yet both are experiencing declining populations and significant pressures from environmental change.

6 0
1 year ago
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