External fertilization occurs when the sperm and egg unite outside the body, commonly seen in aquatic organisms.

Fertilization occurs in sexual reproduction, where male and female gametes fuse to form a zygote.

Sexual reproduction involves the combination of genetic material from two parents, leading to genetic variation.

Regeneration is a form of asexual reproduction where an organism can regrow lost parts.

Covalent network solids are held together by a network of covalent bonds, resulting in very high melting points.

Molecular solids are held together by van der Waals forces.

Iron deficiency causes interveinal chlorosis, where the areas between the veins of leaves turn yellow.

Iron is crucial for chlorophyll synthesis and is involved in various enzymatic reactions in plants.

Integrating both sides, we get y = ∫(2x + 1)dx = x^2 + x + C.

Using an integrating factor, we find the solution is y = Ce^(2x) - 3/2.

This is a separable equation. Integrating gives y = Ce^(2x^3).

This is a separable equation. Integrating gives y = Cx.

This is a linear first-order equation. The solution is y = 5/2 + Ce^(-2x).

Using the integrating factor method, we find the solution y = (3/5) + Ce^(5x).

The characteristic equation is r^2 - 3r + 2 = 0, which factors to (r - 1)(r - 2) = 0. The general solution is y = C1e^(x) + C2e^(2x).

This is a first-order linear equation. The integrating factor method gives the solution y = 2 - Ce^(-6x).

This is a separable equation. Separating variables and integrating gives y = Cx.

Using an integrating factor e^(2x), we solve to get y = 3 - Ce^(-2x).

Using the integrating factor e^(∫(1/x)dx) = x, we solve to get y = x + C/x.

This is separable: dy/y = dx/x. Integrating gives ln|y| = ln|x| + C, thus y = Cx.

Sulfur is a key component of certain amino acids, which are the building blocks of proteins.

The Arrhenius equation relates the rate constant (k) to temperature (T) and activation energy (Ea).

The average speed of gas molecules is given by the formula v_avg = (8kT/πm)^(1/2), where k is the Boltzmann constant, T is the temperature, and m is the mass of a gas molecule.

According to Archimedes' principle, the buoyant force is equal to the weight of the fluid displaced by the object.

According to Archimedes' principle, the buoyant force on a submerged object is equal to the weight of the fluid displaced by the object.

Capacitance (C) is directly proportional to the area of the plates (A) and the dielectric constant (ε) and inversely proportional to the distance (d) between the plates.

The capacitance (C) of a parallel plate capacitor is given by the formula C = ε₀A/d, where A is the area of the plates and d is the separation between them.

'Survival of the fittest' is a phrase often associated with Darwinism, which emphasizes the role of natural selection in evolution.

'Survival of the fittest' is a phrase often associated with Darwinism, which emphasizes natural selection as a key mechanism of evolution.

'Survival of the fittest' is a phrase often associated with Charles Darwin's theory of natural selection, emphasizing that those best adapted to their environment are more likely to survive and reproduce.