Question

trees that usually lose their leaves in the winter are:
a deciduous trees
b oak trees
c maple trees
d elm trees
e all of these trees loose their leaves in the winter
question 29
as an overall average, about ______ of the energy at one trophic level is available to the next highest rank in the food chain.
a two percent
b four percent
c seven percent

Explanation:

For the first question: Deciduous trees are defined as trees that shed leaves seasonally (e.g., winter). Oak, maple, and elm are specific types of deciduous trees, but the question asks for the general category. For the second question: The 10% rule in ecology states that ~10% of energy transfers between trophic levels, but since the options don’t include 10%, note the visible options are incomplete. However, based on standard knowledge, the intended answer is typically 10% (not listed here).

Answer:

First question: A. Deciduous trees
Second question: (Note: Standard answer 10% not listed; visible options incomplete)