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Kisachek [45]
3 years ago
7

A molecular clock uses mutation rates in DNA to estimate the time that two species have

Biology
1 answer:
madam [21]3 years ago
5 0
D. Evolving independently
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A species of finch has been studied on one of the geographically isolated Galapagos Islands for many years. Since the island is
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B) Inherited some advantageous variations
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Under normal conditions glomerular filtration depends on three main pressures. What pressures is a pressure that favors the proc
vladimir2022 [97]

Answer:

Glomerular Hydrostatic pressure .

Explanation:

The basic function of the kidney is the formation of urine for elimination through the urinary excretory system. Two different processes determine this formation: the filtration of fluid through the glomerular capillaries into Bowman's space and the modification of the volume and composition of the glomerular filtrate in the renal tubules.  The fluid passes from the glomerular capillaries to Bowman's capsule due to the existence of a pressure gradient between these two areas. This process is favored by two structural characteristics that make renal corpuscles particularly effective filtration membranes: glomerular capillaries have a much higher number of pores than other capillaries, and the efferent arteriole has a smaller diameter than the afferent arteriole, causing greater resistance to outflow of blood flow from the glomerulus and increasing glomerular hydrostatic pressure. Increased glomerular hydrostatic pressure (due to increased blood flow through the glomerulus) increases filtration, while increases in Bowman's hydrostatic pressure or urinary space (which remains constant, unless there is disease at that level, usually due to fibrosis) and plasma P. oncotic (determined by proteins, which tend to "drag" plasma into the glomerulus) decrease filtering. Resulting in a filtering pressure of 10 mmHg.

8 0
3 years ago
how will solar energy affect us in the future? ESSAY DUE AT 9:00 A.M tomorrow. Please finish I will give 100 points
oee [108]

Answer:

i love you:)

Explanation:

Solar energy has come a long way in a decade. Back in 2010, the global market was small and highly dependent on subsidy regimes in countries such as Germany and Italy. This year there will be more than 115 gigawatts (GW) of solar installed across the world, which is more than all other generation technologies put together. It is also increasingly low cost, especially in sunnier regions where it has already become the lowest-cost form of new electricity generation.

In the coming years, technology improvements will ensure that solar becomes even cheaper. It could well be that by 2030, solar will have become the most important source of energy for electricity production in a large part of the world. This will also have a positive impact on the environment and climate change.

Going forward the solar industry has very clear cost-reduction roadmaps, which should see solar costs halving by 2030. There is already a move in place towards higher-efficiency modules, which can generate 1.5 times more power than existing, similarly sized modules today using a technology called tandem silicon cells. These are going to have a large impact going forward.

In addition, there are production innovations coming down the pipeline that will reduce the amounts of costly materials such as silver and silicon used in the manufacture of solar cells, as well as innovations such as bifacial modules which allow panels to capture solar energy from both sides. The other important innovation is around how best to integrate solar into our homes, businesses and power systems. This means better power electronics and a greater use of low-cost digital technologies.

What this means is that solar will reach, in many parts of the world, a levelized cost of energy that will make it unbeatable compared to fossil fuels. Given that solar is so easy and quick to install, not to mention flexible - after all, solar can be used to power something as small as a watch or as large as a city - it should mean that solar installations continue to grow over the coming decade. This could also be very good for the climate. Now that is something bright to write about.

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3 years ago
Do plant cells always have cell walls
natta225 [31]

Answer: no they don’t they only have one

Explanation:

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3 years ago
Oxygen-rich blood is carried to the brain via the
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<span>Oxygen-rich blood is carried to the brain via the blood vessels. BLood vessels are the living life support of the body because it carries blood from the heart to the other organs of the body. Everyday the heart pumps almost 14,000 liters of blood to provide the needs of the body and at the same time, the blood vessels also carries waste from the body and out.</span>
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