Is this a good program so far?

// Science test = Monday
var Science_Test = "Monday";
alert("Your science test is " + Science_Test + "!");
var Question_1 = prompt("What 2 kingdoms were living things ORIGINALLY divided into?");
if (Question_1.toLowerCase() == "plants and animals") {
    alert("....Processing next question");
var Question_2 = prompt("Euglena is a single-celled organism. What do we call organisms that ONLY have one cell?");
 if (Question_2.toLowerCase() == "unicellular") {
alert("....Processing next question");
var Question_3 = prompt("How many kingdoms are living things divided into?");
if (Question_3 == 6) {
            alert("....Processing next question");
        var Question_4 = prompt("Cyanophytes, also called blue-green algae, belong to which kingdom?");
        if (Question_4.toLowerCase() == "archaebacteria") {
            alert("....Processing next question");
            var Question_5 = prompt("What do we call something when it has no nucleus inside its cell?");
            if (Question_5.toLowerCase() == "prokaryotic") {
                alert("....Processing next question");
                var Question_6 = prompt("Both the Eubacteria and Archaebacteria kingdoms contain bacteria. What kingdom contains unicellular and prokaryotic bacteria that are often referred to as 'the true bacteria'?");
                if (Question_6.toLowerCase() == "eubacteria") {
                    alert("....Processing next question");
                    var Question_7 = prompt("What kingdom has bacteria that lives INSIDE YOU?");
                    if (Question_7.toLowerCase() == "eubacteria") {
                        alert("....Processing next question");
                        var Question_8 = prompt("What kingdom did scientists create so they could put organisms in it that didn't fit anywhere else?"); 
                        if (Question_8.toLowerCase() == "protista") {
                            alert("....Processing next question");
                            var Question_9 = prompt("Most protists are single-celled. Like plant and animal cells, protist have a _______");
                            if (Question_9.toLowerCase() == "nucleus") {
                            alert("....Processing next question");


                            } 

                        }
                    }

                }   
            }
        }
}
}
}
document.write("<h1>The program has ended.</h1>");