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yKpoI14uk [10]
3 years ago
8

Which type of substance will react exothermically with oxygen?

Biology
1 answer:
Zinaida [17]3 years ago
8 0

Hydrogen will, thus forming water. But there are probably more substances
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Select the correct statement about the three-chambered hearts of amphibians and nonbird reptiles. A scheme of blood circulation
Soloha48 [4]

Answer:

The three-chambered hearts of amphibians and nonbird reptiles are facultative, allowing variation in blood flow through the heart.

Explanation:

In Anatomy, cardiac cycle can be defined as a complete heartbeat of the human heart which comprises of sequential alternating contraction and relaxation of the atria and ventricles, therefore causing blood to flow unidirectionally (one direction) throughout the human body.

Generally, the cardiac cycle occurs in two (2) stages;

I. Diastole : in this stage, the ventricles is relaxed and would be filled with blood.

II. Systole: at this stage, the muscles contracts and thus, allow blood to be pushed through the atria.

All amphibians and reptiles except for crocodiles (having four-chambered heart) have three-chambered hearts, which typically comprises of a partially divided ventricle and two atria.

Hence, the correct statement about the three-chambered hearts of amphibians and nonbird reptiles is that, the three-chambered hearts of amphibians and nonbird reptiles are facultative, allowing variation in blood flow through the heart due to the partially divided ventricle.

7 0
2 years ago
5. Norbert is going to be bred with another dragon that has brown scales and blue fire.
lys-0071 [83]

Answer:

SS+SS=SS

Ff+ff=ff

Explanation:

Dominant alleles are capital

4 0
3 years ago
Where do the cells project through the ethmoid bone and synapse with the olfactory bulbs?
VikaD [51]
<span>The afferent nerve fibres of the olfactory receptor neurons transmit nerve signal about odours to the CNS. From the olfactory mucosa (inside the nasal cavity), the nerve travels up through the cribriform plate of the ethmoid bone where the fascicles enter the olfactory bulb<span>. The olfactory</span> bulb is a structure which contains specialised neurones, called mitral cells and the nerve fibres synapse with those mitral cells, forming collections known as synaptic glomeruli. From the glomeruli, second order nerves then pass into the olfactory tract which runs to the CNS (</span>primary olfactory cortex). 
8 0
3 years ago
15 POINTS ANSWER FAST -- Choose the correct description of a comet.
VikaD [51]

Answer:

Bodies of ice and rock that orbit the Sun and produce a coma and tail of vapor and dust when near the Sun

Explanation:

So if you go to the NASA dictionary it states:

Comet- cosmic snowballs of frozen gases, rock, and dust that orbit the Sun.

So it is most definitely the second option

Have a great day :D

5 0
3 years ago
Short pea plants exist in the P1 and F2 generations. What happens to the phenotype in the F1 generation?
OLga [1]
The correct answer to this question is <span>The allele for short pea plants is masked during the F1 generation, but it is still present in the genotype.</span>
7 0
3 years ago
Read 2 more answers
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