Clara made a model of an animal cell for science class. Her model is shown below. a. Identify two animal cell structures that are missing from Clara's model.
b. Describe the function of each cell structure you identified in part (a). c. The
model contains a large number of mitochondria. Identify the main role of
mitochondria in animal cells. d. Identify one type of animal cell that typically
contains large numbers of mitochondria

What is the next step in muscle contraction after the actin changes shape? (apex)

Which statement correctly identifies the scientific question and describes why the question is scientific? question 1 refers to the supernatural. question 2 reflects a moral or social value. question 3 refers to something that can be measured. question 4 reflects a question that can’t be observed.

African penguins, which inhabit the coasts of southern africa, were classified as an endangered species in 2010. two significant threats to their survival are ecosystem damage from oil spills and overfishing by humans. overfishing depletes the food supply of african penguins. the best method to reduce the threat of overfishing would be to . the risk of oil spills could be reduced by increasing the use of , which should oil consumption. if an oil spill does occur, could be used to remove the oil so the ecosystem may more quickly recover.