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Verdich [7]
3 years ago
7

Which of the below is true about Brazil's Araucaria trees?

Biology
1 answer:
PilotLPTM [1.2K]3 years ago
8 0

Answer:

d.They are still very common ,but threatened with increasing harvesting for timber.

Explanation:

Brazil's Araucaria trees:

   These trees are very soft and can be cut so easily.Brazilian pines is also know as Araucaria tree.

Before 1950's or 60's the number of trees were more but now due to harvesting the number of trees become less.The these trees are used for timber and for glue also.

In the present time the availability of these trees threatened with increasing harvesting for timber.

So the our option d is correct.

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Select the three ways water and energy are consumed in the production of store-bought bread
RSB [31]

Answer:

Water and energy are the raw materials for bread making

Explanation

Gluten is formed from water and water also gives consistency to dough. Roughly 40% of dough is water. It also provides medium to dissolve sugar and enzymes in dough making for bread. It does gelatinisation of starch that helps in easy digestion of bread. Energy and heat are used to distribute water through the bread.

4 0
3 years ago
Give the mechanism of control and co-ordination in animals and plants.
Nutka1998 [239]
I would say the the mechanism of control and co-ordination in plants and animals is called the Hormonal Feedback Mechanism. Since hormones command many cell functions, they are very important for homeostasis. Hormones control many cell activities, so they are very important for homeostasis or the stable functioning of an organism. These hormones are managed by feedback mechanisms. Such a mechanism feeds back to control its own production. It does this in a continuous loop.
7 0
3 years ago
A NASA scientist receives satellite data indicating that a newly discovered planet contains no oxygen gas in its atmosphere. Fro
algol13

Answer:

c. endosymbiosis requires high oxygen concentrations for evolution to proceed

Explanation:

Endosymbiosis is an hypothesis which stipulates that complex organelles like mitochondrion and chloroplast evolved as a result of symbiotic relationship between aerobic, single cell prokaryotes in which an aerobic organism ingest an anaerobic organism in an atmosphere containing oxygen.

The oxygen in the atmosphere is like a poison to the anaerobic prokaryote and the ingestion by aerobic prokaryote protects it from the toxic effects of oxygen and in return, the ingested organism offers some benefit to its host resulting in a beneficial relationship.

Hence, the presence of oxygen is important for endosymbiosis and eventual evolution of complex organelles in multicellular organisms.

The correct option is c.

7 0
3 years ago
What are T cells and B cells? <br>antibodies<br>pathogens<br>antigens<br>lymphocytes​
taurus [48]

Answer

lymphocytes

Explanation:

but they have a little difference

8 0
3 years ago
Read 2 more answers
How do the colors of light affect photosynthesis? Which color was most efficient, medium and least?
Virty [35]

Answer:

blue is the most efficient while green is the least efficient  

Explanation:

It is well known that different photosynthetic pigments can absorb light at different wavelengths. Thus, the amount of light absorbed during photosynthesis depends on the color of the source light. The leaves have green color because chlorophyll is a photosynthetic pigment that absorbs light at all wavelengths and reflects green light. The best wavelengths are those at 430–450 nm (blue range) and 600–700 nm (red range), thereby photosynthesis is most efficient when plants are illuminated by light sources that emit blue and red lights. Moreover, sources that emit light at the green wavelength are least efficient for photosynthesis.

8 0
3 years ago
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