Answer is labyrinthodont
About 110 million years ago, labyrinthodonts ( maze-toothed), a group of extinct amphibians. They were evolved from lobed-finned fish in the Devonian period. They were dominant animals in the rift valley was present at that time between Antarctica and Australia.
B. Unbalanced
C. Contact
D. Non-contact
cooling of the power plant
b.
mining of uranium
c.
storage of radioactive waste
d.
monitoring the reactor
The correct answer is option B
The mining of uranium is harmful for both air and water. Uranium is a radioactive compound that is extracted by mining.
Uranium ore emits the gas named radon. The health effects of exposure to radon have particular problems. Significant rate of lungs cancer was observed during the 1940s and 1950s.
Water is used in the heap leaching of the uranium mining. The water can get mixed into the normal supply of water and harm the health of people.
Mining of the radioactive element Uranium has the following negative effects on both air and water such as contamination.
This is a a silvery-white metallic chemical element in the periodic table, with atomic number 92 and is commonly used to run nuclear power plant.
it exists in the air and when contaminates water could lead to kidneyailments in affected individuals which is why option B was chosen as the most appropriate choice.
Read more about Uranium here brainly.com/question/26826312
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A. 54.5 x 102 kg
B. 5.45 10-3 kg
C. 5.45 103 kg
D. 545 x 103 kg
Answer:
C. 5.45 × 10^3 kg
Explanation:
Scientific notation is a way of writing large or small numbers in a decimal form also called exponential form i.e. expressed in terms of power of tens.
This simple method can ve followed when converting a number to scientific notation. We say; a × 10^x
a is the decimal number expressed in the power of tens
x is power of ten
According to the question, a male African elephant weighs 5450 kg.
To convert 5450 to scientific notation, we first of all move the decimal points to the left until we have only one number leftward
N.B: the decision point in any whole number is in front of the last number going rightwards.
We have, 5450 = 5.450
Next, we count how many times the decimal point was moved leftwards. In this case, it was moved three (3) times. Hence, the power of ten (x) is 3.
Because we moved leftwards, the power of ten will be a positive number. We have;
5.450 × 10^3 kg.
B) accessing food
C) obtaining oxygen
D) avoiding predators
Answer:
The answer is C
Explanation:
Because in order for it to breath well it needs to move its gills
White tip reef sharks pump water across their gills to obtain oxygen.
White tip reef sharks spend most of the day lying on the ocean floor. They pump water across their gills while remaining still, as the movement of water across their gills is necessary for obtaining oxygen. Gills in fish, including sharks, absorb oxygen from the water as it passes over them. Sharks have well-developed sense organs that aid them in locating prey, including a keen sense of smell and the ability to detect electromagnetic fields.
Electroreceptors called ampullae of Lorenzini allow sharks to detect the electromagnetic fields that are produced by all living things, including their prey. The lateral line is used to detect movement and vibration in the surrounding water, and is often considered to be functionally similar to the sense of 'hearing' in terrestrial vertebrates.
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A. Condensation
B. Precipitation
C. Collection
D. Evaporation