Answer: The correct answer for the fill in the blank is A) Circulatory, immune.
Circulatory system also called cardiovascular system is a vast network of organs and vessels that allow the circulation of blood so as to transport nutrients, oxygen, other gases, and hormones to different parts of the body.
Blood contains different cells like white blood cells, red blood cells, platelets.
White blood cells ( also called leukocytes) work closely with immune system. They provide defense against pathogen ( disease causing organisms) through various ways ( like ingesting foreign material, producing antibodies to clear the antigens). By doing so, they protect us from infection and disease.
The heart is a pump made of muscle and that is difficult to grow in the lab.
B)
Even if researchers build a heart, there is no guarantee that a person's body will accept it.
C)
Human hearts are not like any other animal hearts so there is not source for cells and tissues.
Eliminate
D)
The heart is made up of many different types of cells that are organized into different tissues.
Answer:
I think that the correct answer for your question is D
Answer:
Warm front Forms when a moist, warm air mass slides up and over a cold air mass. As the warm air mass rises, it condenses into a broad area of clouds.
The answer would be sewer systems.
flowers and pure-breeding short pea plants with white flowers. The alleles for
a tall height and purple flowers were dominant. This cross is written as
A. TtPpx TtPp
в. TTppx ttPP
с. Ttppx TtPP
D. TTPPx ttpp
Answer:
The correct answer is - ttPP × TTpp
Explanation:
Answer:
D
Explanation:
He bred two true-breeding strains initially. That means the alleles were homozygous for each gene.
Let's use Tt to represent the height allele: T means tall, t means short; the dominant allele gets the capital letter.
Let's use Pp to represent the flower color allele: P means purple, p means white.
A pure-breeding tall, purple plant would be TTPP.
A pure-breeding short, white plant would be ttpp.
So the cross is D. TTPP x ttpp.
A typical carbon atom can form four covalent bonds. It attains stability by sharing its four outer shell electrons with other atoms via covalent bonds, a process exemplified by methane.
A typical carbon atom can form four covalent bonds. This is because carbon has four electrons in its outer shell and needs to gain four more electrons to attain stability, which it does by forming covalent bonds with other atoms. A covalent bond is formed when two atoms share electrons. A classic example can be seen in methane (CH4), where one carbon atom forms four covalent bonds with four hydrogen atoms.
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a long-term change in the Earth's climate
a long-term increase in the Earth's average temperature
a long-term change in the climate of a region or a city
solar heat that is radiated out into space
Answer:
I think it's the 2nd one