All categories

3 years ago

PLEASE HELP!!! 50 POINTS!!!! All fossil fuels contain this element. Iron Carbon Copper Magnesium

Biology

1 answer:

mariarad [96]3 years ago

4 0

Answer:

Carbon

These fossil fuels are all Hydrocarbons, they are compounds formed from only two elements, Carbon and Hydrogen. Fossil fuels are used to produce energy; in the home they are burned to produce heat, in large power stations they are used to produce electricity and they are also used to power engines.

Explanation:

You might be interested in

How does the structure of the spins cord being long and flexible help it with its function

gulaghasi [49]

Explanation:

The spinal cord functions primarily in the transmission of nerve signals from the motor cortex to the body, and from the afferent fibers of the sensory neurons to the sensory cortex. It is also a center for coordinating many reflexes and contains reflex arcs that can independently control reflexes.

3 0

3 years ago

Environmental factors can also lead to genetic variation by? Will give Brainlyiest please hurry

Mnenie [13.5K]

Answer:

Genetic variation among plant populations often occurs along different climatic gradients, such as temperature and precipitation gradients.

Environmental factors are often responsible for the patterns of genetic structure observed at small spatial scales (Sacks, Brown, & Ernest, 2004).

5 0

3 years ago

In pea plants purple flower color is dominant over white. suppose that you are crossing two heterozygous individuals. what are t

artcher [175]

75% dominant and 25% recessive

4 0

3 years ago

Bob, a nutritionist who works for the university medical center, has been asked to prepare special diets for two patients, susan

abruzzese [7]

Answer and Explanation:

Possibly, you forgot to attach the table with the contents of each food. Therefore, I calculated the task with similar values.

1. Assume you have Food A, B, and C. Each has certain amount of Calcium, Iron, and Vit C.

Let's designate: Calcium → X oz , Iron → Y oz, vit C → Z oz

2. Assume you have following amount of Calcium in each food:

Food A = 30 mg/oz
Food B = 25 mg/oz
Food C = 20 mg/oz

3. Assume you have following amount of Iron in each food:

Food A = 1 mg/oz
Food B = 1 mg/oz
Food C = 2 mg/oz

4. Assume you have following amount of vit C in each food:

Food A = 2 mg/oz
Food B = 5 mg/oz
Food C = 4 mg/oz

Calculations:

→ You have 3 different food and each has Calcium in it. You need exactly 320mg of Calcium per day. Therefore, each food would comprise certain proportion of daily Calcium intake. We can come up with equation: 30X+25Y+20Z = 390 mg

Similarly, for iron and vitamin C, the next equations could be used:

X+Y+2Z=17 - Iron

2X+5Y+4Z=42 - Vit C

→ Now you have a system of equations:

30X+25Y+20Z = 390 (1)

X+Y+2Z=17 (2)

2X+5Y+4Z=42 (3)

→ Look for similarities! (1) and (3) seem to be similar. We can multiply the (3) by -5 to obtain: -10X-25Y-20Z=-210. We add the (1) and modified (3) equations.

30X+25Y+20Z = 390

-10X-25Y-20Z=-210

__________________

20X+0+0=180

20X=180

→ X=9 (oz of Calcium)

→ Now, we can put x=9 into equations above to ease our job:

270+25Y+20Z=390 → 25Y+20Z=390-270=120

9+Y+Z=17 → Y+2Z=17-9=8

18+5Y+4Z=42 → 5Y+4Z=42-18=24

→ Similarly, we can use Eq-s (2) and (3). We can multiply the (2) by -5 to obtain: -5Y-10Z=-40. We add the (3) and modified (2) equations.

-5Y-10Z=-40

5Y+4Z=24

__________________

-6Z=-24

Z=4

→ Z=4 (oz of vit C)

→ Now, we can take X+Y+Z=17 (2) and just put in known values(X=9 and Z=4) to obtain Y:

9+Y+4=17

→ Y=17-9-4=4 (oz of Iron)

That's all! So, if you have table values, you can just re-write the equations and doing it stepwise, as it is shown here, you can manage to calculate every value you need :)

3 0

3 years ago

Lysine is a monomer used to make a proteins.It is a

Usimov [2.4K]

Solution:

A basic amino acid which is a constituent of most proteins. It is an essential nutrient in the diet of vertebrates.

Proteins: the macromolecule and the monomer: Proteins are about 50% of the dry weight of most cells, and are the most complex of the macromolecules we will talk about, because there are 20 different monomers or building blocks, called amino acids.

Thus this is the required answer.

4 0

3 years ago