Which type of epithelial cell is best adapted to aid diffusion? a. squamous, b. cuboidal, c. columnar, d. transitional.

Which type of connective tissue has the most fibers? a. loose connective tissue, b. fibrous connective tissue, c. cartilage, d. bone.

Which is an example of negative feedback? a. lowering of blood glucose after a meal, b. blood clotting after an injury, c. lactation during nursing, d. uterine contractions during labor.

Which statement about the taxonomic classification system is correct? a. There are more domains than kingdoms. b. Kingdoms are the top category of classification. c. Classes are divisions of orders. d. Subspecies are the most specific category of classification.

In the course of double fertilization, one sperm cell fuses with the egg and the second one fuses with ________. a. the synergids, b. the polar nuclei of the center cell, c. the egg as well, d. the antipodal cells.

Identify the property that justifies the following statements.

$$(x+y)\left(\dfrac{1}{x+y}\right)=1$$

Translate the following algorithm into Java code:

Step $1$: Declare a double variable named miles with an initial value $100$.

Step $2$: Declare a double constant named KILOMETERS_PER_MILE with value $1.609$.

Step $3$: Declare a double variable named kilometers, multiply miles and KILOMETERS_PER_MILE, and assign the result to kilometers.

Step $4$: Display kilometers to the console. What is kilometers after Step $4$?

Complete the following statements.

Donde vivo, el mes de _____________________ llueve más.

Evaluate.

$$\sum_{k=3}^5 \frac{(-1)^k}{k !}$$

Solve the equation or write no real solution. Write the solutions as integers if possible. Otherwise, write them as radical expressions.

$$y^2=0$$

Explaln how it is possible for two atoms of the same element to have different masses.

Find the derivatives of the given functions. Assume that $a, b, c$, and $k$ are constants.

$$y = \frac{x^2 + 1}{x}$$

Find the derivative of the following functions. $y=\frac{a \sin x+b \cos x}{a \sin x-b \cos x}$; a and b are nonzero constants

A clothing manufacturer purchased $60 \mathrm{~yd}$ of cotton and $90 \mathrm{~yd}$ of wool for a total cost of $\$ 1800$. Another purchase, at the same prices, included $80 \mathrm{~yd}$ of cotton and $20 \mathrm{~yd}$ of wool for a total cost of $\$ 1000$. Find the cost per yard of the cotton and of the wool.