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Naya [18.7K]
3 years ago
12

1) How long ago were fossil fuels created?

Biology
1 answer:
kumpel [21]3 years ago
8 0

How long were fossil fuels created?: long before the dinosaurs even ruled the world.

Algae grown in open pond systems are susceptible to invaders, what are they and

how do they impact the algae? Algae cultivation takes place in large ponds, or in enclosed systems enhanced with CO2. Algae cultivation has many commercial and industrial uses and looks to be a promising long-term sustainable source of biomass and oils for fuel, food, feed and other co-products. Algae have evolved to produce and store energy in the form of oil. They are more efficient than many other natural or engineered

Algae cultivation takes place in large ponds, or in enclosed systems enhanced with CO2. Algae cultivation has many commercial and industrial uses and looks to be a promising long-term sustainable source of biomass and oils for fuel, food, feed and other co-products. Algae have evolved to produce and store energy in the form of oil. They are more efficient than many other natural or engineered: Idk..

What are the advantages of using wastewater in marine algae growth?: Idk sorry

I really hopes at least have of this helps :D

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Compare the rates of cell division occurring in your neurons and your hair follicles.
Firlakuza [10]

Once you finish growing to adulthood, neurons stop dividing. Hair follicle cells constantly divide throughout your lifetime since they are constantly producing cells that become part of the hair itself as they die. So in an adult, the rate of cell division for neurons is zero (although there is some counter-evidence but it is certainly very low) while the hair follicle rate is much higher on the order of once every few days or faster.

5 0
3 years ago
Give one example of a parasitic fungi and explain how it affects human health.
Zarrin [17]

Answer: Many pathogenic fungi are parasitic in humans and are known to cause diseases of humans and other animals. In humans, parasitic fungi most commonly enter the body through a wound in the epidermis (skin). Such wounds may be insect punctures or accidentally inflicted scratches, cuts, or bruises. One example of a fungus that causes disease in humans is Claviceps purpurea, the cause of ergotism (also known as St. Anthony’s fire), a disease that was prevalent in northern Europe in the Middle Ages, particularly in regions of high rye-bread consumption. The wind carries the fungal spores of ergot to the flowers of the rye, where the spores germinate, infect and destroy the ovaries of the plant, and replace them with masses of microscopic threads cemented together into a hard fungal structure shaped like a rye kernel but considerably larger and darker. This structure, called an ergot, contains a number of poisonous organic compounds called alkaloids. A mature head of rye may carry several ergots in addition to noninfected kernels. When the grain is harvested, much of the ergot falls to the ground, but some remains on the plants and is mixed with the grain. Although modern grain-cleaning and milling methods have practically eliminated the disease, the contaminated flour may end up in bread and other food products if the ergot is not removed before milling. In addition, the ergot that falls to the ground may be consumed by cattle turned out to graze in rye fields after harvest. Cattle that consume enough ergot may suffer abortion of fetuses or death. In the spring, when the rye is in bloom, the ergot remaining on the ground produces tiny, black, mushroom-shaped bodies that expel large numbers of spores, thus starting a new series of infections.

8 0
2 years ago
Which organism has a central brain?<br><br> A. hydra <br> B. sponge<br> C. flatworm<br> D. fish
Orlov [11]
The correct answer is D Fish ( someone asked me to explain why d is the answer) A sponge obviously doesn’t have a brain, a hydra is an organism and organisms don’t have brains ( hydra also doesn’t have eyes)
6 0
3 years ago
Read 2 more answers
What were the three religious practices one would find in mecca before muhammad's revelations?
Setler [38]
- Gnosticism
- Judaism 
- Christianity 
I'm pretty sure that these are the right answers. Anyways I hope I helped!
8 0
3 years ago
Which of the following statements is true for all types of passive transport? Group of answer choices Ions never cross the plasm
IgorLugansk [536]

Answer:

The concentration gradient is the driving force.

Explanation:

Passive transport of substance occurs when they are moved from the region of their higher concentration to that of their lower concentration. The concentration gradient is the difference in the concentration of substances between two regions or across the membrane. The concentration gradient of substances drives their passive movement. The passive movement of substances does not use metabolic energy.  Simple diffusion and facilitated diffusion are two examples of this transport.

3 0
3 years ago
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