Present Tenses

Your father, who works on the corner at a crackhouse.

the triginomical evolocity and projectory rate produced by the force being applied to the resistance. Pnumatic devices are intended to replace the source of energy provied to do certain tasks. (exp. drive in nail)

Alkaloids have various uses, including being used as pharmaceutical drugs (e.g. morphine), insecticides, stimulants (e.g. caffeine), and painkillers. They also play a role in traditional medicine and have applications in research and development for new medicines.

A rainbow forms a semicircle because it is created by the refraction, reflection, and dispersion of sunlight through raindrops in the atmosphere. The circular shape occurs because the angle of reflection and refraction is consistent for all raindrops within a specific range, resulting in a semicircular arc of color.

WWII was fought all over the world which is how it gained it's name including North Africa, Eastern and Western Europe, The Pacific and several other countries. The highest point of fighting was done in Europe.

{ADDITION}: The correct term for this is WWII. And this took place ALL over the world. The war leaders are Germany [Adolf Hitler], Italy [Benito Mussolini], and Japan [Haidiki Tojo].

Harsh climates, such as extreme heat, cold, or aridity, can discourage settlement due to the challenges they pose for agriculture, water availability, and overall survival. Inaccessibility due to rugged terrain, such as mountains or dense forests, can also discourage settlement by limiting trade, communication, and resource access. Natural hazards like frequent earthquakes, volcanic eruptions, or hurricanes can make an area undesirable for settlement due to the risks they present to human life and infrastructure.

The environment in the past was likely less polluted and more pristine compared to the present. There were fewer human activities causing habitat destruction, species extinction, and climate change. Today, we face more environmental challenges due to increasing population, industrialization, and resource exploitation.

Cynthia digs her heels into the sand.

The past tense of 'am' is 'was'.

The present progressive tense of the word "ask" is "asking."

Yes, an auxiliary verb of present tense helps to form different tenses or aspects of a verb in the present. Examples include "do," "does," "is," "are," "am," "have," and "has."

The present tense be verbs are -- am,is,are.

"Estoy escribiendo en mi cuaderno" is in the present progressive tense. It combines the present tense conjugation of "estar" (estoy) with the gerund form of the verb "escribir" (escribiendo) to indicate an action that is currently in progress.

The present tense for "left" is "leave" or "leaves" depending on the subject.

The perfect tense of "ring" is "rung." For example, "I have rung the bell."

The present tense of the sentence "She turns the light on" is "She turns the light on."

The present perfect tense of "swell" is "has swelled" or "have swelled," depending on the subject of the sentence. For example, "The river has swelled after heavy rains."

The present form of "put" is "put."

The present form of "am" is "am". It is used in the first person singular present tense.

Fly -- I fly to work

Flies -- She flies to work

Flying -- We are flying to work