Explanation

Ultrasound is sound with frequencies greater than 20 kilohertz.

This frequency is the approximate upper audible limit of human hearing in healthy young adults

while 

The first article on the history of ultrasound was written in 1948

Explanation

Insects have segmented bodies, jointed legs, and external skeletons

Explanation

Antiquity is an ancient artifact or item dating from the middle ages and earlier.

Archaeology is a science that studies the human past through the analysis of material culture.

The study of antiquities is known as Archaeology

ND11-2-2023

Explanation

The tomato plant is usually grown in the tropics as a perennial plant.

but in other areas it is mostly grown as a annual plant

Explanation

Energy is stored in the form of glycogen in animals.

Explanation

v∝ n/Z

​where n= orbit's number

So, the velocity of the electron will be maximum in Bohr's first orbit

***

ND2-2-2023

Explanation

According to Boyle's Law, for a fixed mass of gas at constant temperature, the pressure of the gas is inversely proportional to its volume

. This means that if you decrease the volume, the pressure will increase, and vice versa.

Mathematically, it is expressed as: P1V1 =P 2​ V2  where  P is the pressure, and V is the volume.

Therefore, if the volume decreases, the pressure will increase.

Explanation

The mass can be described as inertia of object which resist its changes in state of motion and rest.

Explanation

Decomposers are organisms that break down dead or decaying organisms; they carry out decomposition, a process possible by only certain kingdoms, such as fungi.

Explanation

Brassicaceae species are characterized by four-petalled cross-shaped flowers

*

The flowers have four free sepals,

four free alternating petals,

two shorter free stamens

and four longer free stamens.

***

ND2-2-2023