What happens when urine becomes too concentrated or remains too long in the bladder?

Slight differences in inherited traits, such as feather color in birds, are called a. variations. b. adaptations. c. mutations. d. differential traits.

Dude there isn't even 50 in the answer choice

How has the avian lung adapted to the metabolic demands of flight?

Which is a FALSE statement about the structure of a DNA molecule? A. It is single stranded. B. It has a double helix. C. It has a spiral shape. D. It is like a twisted ladder.

A biologist counts 1,000 in a 200 acre area of grasslands. what is the population density

Which of the following changes in deciduous forests occurs in the winter? a. Trees regain their leaves. b. Trees block the flow of water and nutrients to their leaves. c. The leaves of trees begin to lose their chlorophyll. d.

Which statement about somatic mutations is true

uring which period of prenatal development would exposure to teratogens most likely cause defects to major body structures? a. embryo b. implantation c. fetus d. zygote

The table compares the features of two plant species that exist near the shoreline in South Florida. Tree Species Data Tree Species Shade Provided Native Low Exotic High The nesting sites of sea turtles are more successful when the sites have more

A student measures the length of a glass rod five times and records the data as: a. 23.487 cm b. 23.493 cm c. 23.516 cm d. 23.501 cm e. 23.477 cm The labeled value of the glass rod is 23.490 cm.