Mass extinctions occurred 250 million years ago and 65 million years ago. according to some scientists, which of the following reasons caused both mass extinctions? the earth’s oceans changed a few degrees in temperature. the diversity in the gene pool decreased dramatically. a new species was introduced into an established ecosystem. a large comet or asteroid hit the earth.

Why do you think the puppy litter was all dark-haired?

Getting out of bed is the first goal i tackle each day. 2several small goals are achieved by me as the day progresses. 3when i am riding the bus home or walking the dog, i think about the bigger goals i have for my life. which statement correctly describes the verb tense, aspect, and voice in this paragraph? a. sentences 1 and 2 contain present progressive verbs. sentence 3 contains both present progressive and simple present verbs. sentence 2 uses passive voice. b. sentences 1 and 2 contain simple present verbs. sentence 3 contains present progressive verbs. all three sentences use active voice. c. sentences 1 and 2 contain present progressive verbs. sentence 3 contains simple present verbs. all three sentences use active voice. d. sentences 1 and 2 contain simple present verbs. sentence 3 contains both present progressive and simple present verbs. sentence 2 uses passive voice.

The arrows indicate the direction of wind flow. which place experiences monsoons?