Edema and varicose veins in the lower extremities sometimes develop in the third trimester of a pregnancy due to

Pani-rosa [81]

Answer:

The correct option is E: Limulus - Book Lungs

Explanation:

The structure of a book lung is made so as to maximize the efficiency of gaseous exchange in arachnids. An externally located structure, book gills, aids in this process. Limulus are horseshoe crabs that still makes use of book gills. Its a marine creature (an arthopod, to be specific) that has 5 pairs of book gills on its body.

8 0

3 years ago

Marsha places a sealed plastics bottle of water in the freezer. The next day she discovers that the water has frozen and split t

vova2212 [387]

Answer:

D. physical weathering

Explanation:

The geological process that initiates and leads to the breaking of the rocks is termed as the physical weathering. In this process, the chemical composition of the rocks do not undergo any change. The process of breaking of the rocks is both gradual and sudden. The movement of the earth, the change in the temperature, the rise and fall of the water level, the presence of ice rocks for longer duration of the time, and the melting of the snow are some of the reasons which causes the physical weathering.

The phenomena in the given expert represents the physical weathering.

8 0

4 years ago

Which is not a likely economic tool to address environmental issues?

Elden [556K]

Explanation:

Policy-makers have two broad types of instruments available for changing consumption and production habits in society. They can use traditional regulatory approaches (sometimes referred to as command-and-control approaches) that set specific standards across polluters, or they can use economic incentive or market-based policies that rely on market forces to correct for producer and consumer behavior. Incentives are extensively discussed in several EPA reports

Two basic types of traditional regulatory approaches exist. The first, a technology or design standard, mandates specific control technologies or production processes that polluters must use to meet an emissions standard. The second, a performance-based standard, also requires that polluters meet an emissions standard, but allows the polluters to choose any available method to meet that standard. Performance-based standards that are technology-based, for example, do not specify a particular technology, but rather consider what available and affordable technologies can achieve when establishing a limit on emissions. At times, EPA may completely ban or phase out the use or production of a particular product or pollutant, as it has done with chlorofluorocarbons (CFCs) and certain pesticides. Regulations can be uniform or can vary according to size of the polluting entity, production processes, or similar factors. Regulations are often tailored in this manner so that similar regulated entities are treated equally. MARK AS BRAINLIEST IF IT HELPS

4 0

3 years ago

The fruits have several purposes. Which purposes might be similar to those of a cone?

prisoha [69]

Answer:

Flowers and cones have different structures. Cones when mature have a woody texture and is made up of scales while flowers have colorful petals, sepals and both male and female reproductive portions are called stamens and pistils.

Explanation:

4 0

3 years ago

How many grams of the compound in the figure above are required to make 1 liter of a 0.5 M solution? (Note: The atomic masses, i

Dafna1 [17]

Answer:

This question is incomplete as there is no figure in the question but the compound in the figure is Ethanoic acid (CH3COOH). Hence, we can calculate the mass.

The answer is: 30grams

Explanation:

According to the question, the volume of the compound (CH3COOH) is 1litre while the molar concentration is 0.5M

Molarity or Molar concentration is calculated using the formula:

M= n/V

Where; M= Molarity (M) = 0.5M

n= number of moles (mol)

V= Volume (V) = 1L

Hence, number of moles (n) = M × V

n = 0.5 × 1

n = 0.5 moles.

To calculate the mass in grams of CH3COOH, we say;

Number of moles (n) × molar mass (MM)

Since atomic mass for (C= 12, H= 1 and O=16)

Molar mass of CH3COOH:

= 12 + 1(3) + 12 + 16 + 16 + 1

Molar mass of CH3COOH = 60g/mol

Mass (in grams) of CH3COOH = 0.5 moles × 60g/mol

Mass = 30grams.

Therefore, 30grams of CH3COOH compound are required to make 1 liter of a 0.5 M solution.

6 0

3 years ago