Biology, 29.10.2019 04:31 Randy11111
Acertain type of hummingbird is known to have an average weight of 4.55 grams. a researcher wonders if hummingbirds (of this same type) living in the grand canyon differ in weight from the population as a whole. the researcher finds a sample of 30 such hummingbirds from the grand canyon and calculates their average weight to be 3.75 grams.
Answers: 3
Biology, 21.06.2019 19:40
Populations of blue-winged warblers, a type of bird, migrate south in the winter and return to canadian breeding grounds in the spring. as global temperatures have increased due to climate change, spring has started arriving in the warbler's breeding grounds earlier in the year, before the warblers return. warblers now arrive at their breeding grounds too late to select ideal nesting sites and to feed on important early-spring food sources how are populations of blue-winged warblers most likely to be affected by the earlier arrival of spring? o a. populations will go extinct since the warblers will stop migrating to breeding grounds. b. populations will be unaffected since most species can quickly adapt to effects of climate change. c. populations will increase since warmer temperatures are generally beneficial to survival, d. populations will decline since individuals will be less likely to successfully reproduce, reset next
Answers: 1
Biology, 21.06.2019 22:30
Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.
Answers: 1
Biology, 22.06.2019 13:00
What is the function of the root cap? a. extra-absorbent cells in the root cap absorb more water and nutrients b. protect the meristematic area of the stem c. contains sensors for sunlight d. increases surface area of the root
Answers: 1
Acertain type of hummingbird is known to have an average weight of 4.55 grams. a researcher wonders...
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